Currently, scientists are researching treatments that may work best on cancers that involve a PTEN mutation. [2] MRIs are the preferred method for surveillance of the kidneys in people with BHD because they do not carry the same risk of radiation complications as CT scans, and are more sensitive than ultrasounds. Gardner's syndrome Breast The lifetime risk for a woman with CS to develop breast cancer is estimated to be in the range of 50% to 85%. [16] The children of an affected parent each has a 50% chance of having the disease. Your genetic counselor will also help you understand the results of any genetic testing, including what cancer screenings youll need if you have PTEN hamartoma tumor syndrome (PHTS). Choose from 12 allied health programs at School of Health Professions. It turns out thyroid cancer had not spread to his lung, after all. [5] Tuberous sclerosis must be distinguished because both disorders can present with angiofibromas on the face, though they are more common in tuberous sclerosis. syndrome PTEN hamartoma tumor syndrome (PHTS) includes Cowden syndrome and Bannayan-Riley-Ruvalcaba syndrome (BRRS). These cases occur in people with no history of the disorder in their family. No. [4] Spontaneous, sometimes recurrent,[5] pneumothorax occurs far more often and at a younger age with BHD than in the unaffected population. Cowden syndrome - About the Disease - Genetic and The lifetime risk of cancer in individuals with LFS is =70% for men and =90% for women. It also causes multiple noncancerous, tumor-like growths that resemble skin tags, goosebumps or razor burn on various parts of the body. Hereditary bilateral, multifocal kidney tumors similar to those seen in BHD can occur with von HippelLindau disease (clear cell renal cell carcinoma), hereditary papillary renal cancer (papillary renal cell carcinoma), and hereditary leiomyomatosis and renal cell cancer syndrome. What is the prognosis of a genetic condition? Tan MH, Mester J, Peterson C, Yang Y, Chen JL, Rybicki LA, Milas K, Pederson The disease was discovered in 1977, but the connection with FLCN was not elucidated until 2002, after kidney cancer, collapsed lungs, and pulmonary cysts were all definitively connected to BHD. The outlook for people with CS can be positive. The earliest case of possible BHD in the medical literature was published by Burnier and Rejsek in 1927,[22] who described a case of perifollicular fibromas on a 56-year-old woman's face. Fibrofolliculomas can be removed surgically and pneumothorax and kidney cancer are treated according to the normal standard of care. Policy. If you have Cowden syndrome, ask your genetic counselor if your family members should have genetic testing. People with PHTS and BRRS face similar health risks. Last reviewed by a Cleveland Clinic medical professional on 03/14/2023. No. Log in to our secure, personalized website to manage your care (formerly myMDAnderson). Instead, treatment will address your symptoms. Its also important to know the potential warning signs of cancer. You dont know if theyre cancerous or not, so my motto is better safe than sorry. I tell Dr. Thomas anytime I see a new growth.. [6], Knockout mice have been created for a kidney-cancer causing mutation of BHD; heterozygotes develop kidney cysts and tumors that lead to renal failure within three weeks of birth. Although the original syndrome was discovered on the basis of cutaneous findings, individuals with BHD may only manifest the pulmonary and/or renal findings, without any skin lesions. People with Cowden syndrome often have many noncancerous, tumor-like growths. Knowing when symptoms began to appear can help medical providers find the correct diagnosis. The National Comprehensive Cancer Network and Cleveland Clinic have established genetic testing guidelines for Cowden syndrome that are updated frequently based on new research. PTEN hamartoma tumor syndrome - About the Disease Any of these conditions that occurs in a family can indicate a diagnosis of BirtHoggDub syndrome, though it is only confirmed by a genetic test for a mutation in the FLCN gene, which codes for the protein folliculin. PHTS includes Cowden syndrome and Bannayan-Riley-Ruvalcaba syndrome (BRRS). We do not endorse non-Cleveland Clinic products or services. Other diseases of the breast, thyroid, and endometrium are also common in Cowden syndrome. A characteristic symptom of CS is the development of multiple hamartomas in different areas of the body. Cowden Syndrome Most affected people also have characteristic dark blue to dark brown macules around the mouth, eyes, and nostrils; near The symptoms from some diseases may begin at any age. PTEN Hamartoma Tumor Syndrome (PHTS) - Cleveland At a follow-up appointment one week after surgery, Jon learned he had follicular thyroid cancer an aggressive form of the disease and it had invaded his blood and lymph vessels. Theyll need frequent cancer screening tests that may detect cancer before it causes symptoms. Pain on your right side is common, with many minor to serious causes. When shes not writing or editing, shes literally herding cats. In early CS, many people begin to experience symptoms involving their skin and mucous membranes. People with Cowden syndrome often have many noncancerous, tumor-like growths and skin issues. [5] The 508th amino acid, normally lysine, is affected by a missense mutation in some people with BHD. Use of this website and any information contained herein is governed by the Healthgrades User Agreement. [5] A correlation between different FLCN genotypes and phenotypes has not been discovered. The Hidden Risks of Sepsis: What You Need to Know. [6] Haploinsufficiencyonly having one functional copy of the FLCN geneis enough to cause the fibrofolliculomas and pulmonary cysts, though one copy of the gene is enough to keep kidney cells in check. Am J Hum Genet. The Drosophila homolog of the human tumor suppressor gene BHD interacts with the JAK-STAT and Dpp signaling pathways in regulating male germline stem cell maintenance. Cutaneous manifestations are confirmed by histology. Jon knows that, because of Cowden syndrome, cancer will always be a part of his life. Learning of a PHTS diagnosis can be difficult, whether the diagnosis applies to you or your child. Men, especially those with Cowden syndrome, can develop breast cancer, Jon explains. Mutations in the FLCN gene may interfere with the ability of folliculin to restrain cell growth and division, leading to the formation of noncancerous and cancerous tumors. Jons lung cancer had already spread throughout his body, leaving him with about 10 months to live. [15] These mutations are often passed from one generation to the next in an autosomal dominant fashion, but can occur as a new mutation in an individual with no prior family history (a de novo mutation). Hobert JA, Eng C. PTEN hamartoma tumor syndrome: an overview. Four-time cancer survivor spreads awareness of Cowden syndrome, Physician Relations Continuing Education Program, Specialized Programs of Research Excellence (SPORE) Grants, Prevention & Personalized Risk Assessment, MD Anderson UTHealth Houston Graduate School, Comparative Effectiveness Training (CERTaIN), Cancer Survivorship Professional Education, Post Graduate Fellowship in Oncology Nursing, Argyros Postdoctoral Research Fellowship in Oncology Nursing, Professional Student Nurse Extern Programs, MD Anderson UTHealth Graduate School of Biomedical Sciences. doi: 10.1016/j.ajhg.2008.07.011. Some people with Cowden syndrome have relatives diagnosed with Bannayan-Riley-Ruvalcaba syndrome, and other affected individuals have the characteristic features of both conditions. We do not endorse non-Cleveland Clinic products or services. [5] Tumors differ between individuals; they may appear merged in plaques, look similar to a comedo with a plug of keratin, or include epidermoid cysts. If genetic testing reveals that you have PTEN hamartoma tumor syndrome (PHTS), your genetic counselor will also help you understand what cancer screening tests youll need. Hum Mol Genet. Genetic Testing Registry: Cowden syndrome, Genetic Testing Registry: Cowden syndrome 1, Genetic Testing Registry: Cowden syndrome 4, Genetic Testing Registry: Cowden syndrome 5, Genetic Testing Registry: Cowden syndrome 6, Genetic Testing Registry: Cowden syndrome 7, National Organization for Rare Disorders (NORD). BirtHoggDub syndrome affects the skin and increases the risk of tumors in the kidneys and lungs. [5] There is no cure at this time, and in its more advanced forms, it is considered a terminal diagnosis with a life expectancy of 3545 years; treatments are surgery and palliative care, although some chemotherapy has been tried with limited success. It is often underdiagnosed due to variability in disease presentation, but 99% of patients report mucocutaneous symptoms Cowden syndrome is fairly rare, though its likely underdiagnosed in the first place. These criteria are established by the International Cowden Syndrome Consortium. Yehia L, Eng C. 65 YEARS OF THE DOUBLE HELIX: One gene, many endocrine and It also explains the outlook for people with the condition and possible complications. This is why cancer screenings are so important. Dermatologic examinations, neck ultrasounds and colonoscopies should be considered as well [1]. Another seven years would pass before Jon confronted another new cancer diagnosis: skin cancer. If you have questions about MD Andersons appointment process, our information page may be the best place to start. Sherman and oncologist Faye Johnson, M.D., Ph.D., suspected Jons double cancer diagnosis was more than a coincidence. For example, if you have early-onset breast cancer thats diagnosed after the cancer spreads, your life expectancy may be shorter than someone whose cancer was diagnosed and treated early on. While PHTS is most commonly associated with benign tumors called hamartomas, out-of-control cell growth can also cause malignant tumors to form. (https://pubmed.ncbi.nlm.nih.gov/32568377/), (https://pubmed.ncbi.nlm.nih.gov/31433956/), Unexpected cancer-predisposition gene variants in Cowden syndrome and Bannayan-Riley-Ruvalcaba syndrome patients without underlying germline, (https://pubmed.ncbi.nlm.nih.gov/29684080/). While these growths are benign, people with the condition are at increased risk for certain types of cancer. Cowden Syndrome: Definition, Symptoms, Treatments, and More Recent Lipomas, skeletal deformities, cerebellar ataxia, photomyoclonus. In some cases, an affected person inherits the mutation from one affected parent. Healthgrades Can Help. 10, 11 Based on rare case reports, the risk of breast cancer for males with CS is believed to be increased overall as well. Other diseases can mimic the dermatologic manifestations of BHD, including tuberous sclerosis complex, Cowden syndrome, familial trichoepitheliomas, and multiple endocrine neoplasia type 1. Thyroid/parotid ultrasound should be considered annually, NIH Rare Lung Diseases Consortium Contact Registry, "Rare Lung Diseases Disorder Definitions", "A substrate-specific mTORC1 pathway underlies BirtHoggDub syndrome", Genetics Home Reference: Educational Resources, "Birt-Hogg-Dub syndrome: Educational resources", "Association between Birt Hogg Dub syndrome and cancer predisposition", https://en.wikipedia.org/w/index.php?title=BirtHoggDub_syndrome&oldid=1150449412, Short description is different from Wikidata, Creative Commons Attribution-ShareAlike License 3.0. [2] Collagenomas of the skin are also found in some families. 2012 Jan Providers may suspect you have Cowden syndrome if you have: The major and minor criteria for Cowden syndrome are: If your provider believes you may have Cowden syndrome, theyll take your family history and order genetic testing to determine if you have a genetic mutation. 2006 Sep 28;25(44):5933-41, List of cutaneous neoplasms associated with systemic syndromes, hereditary leiomyomatosis and renal cell cancer syndrome, Dermatologic examination every 6-12 months, . Regardless of how you got the mutation, once you have it, you have a 50% chance of passing the copy of the mutated gene onto your child. Your doctor can begin or change your treatment to help you manage depression. Thomas removed the lump and diagnosed it as a dermatofibrosarcomaprotuberans, a rare cancer that develops in the deep layers of skin. WebSummary. This sometimes happens if the tissue sample is too small, Sherman explains. Endocrinologist Steven Sherman, M.D., was the first in a long line of doctors Jon would encounter at MD Anderson. Peutz-Jeghers syndrome Life expectancy with Cowden syndrome depends on your situation. Families that have Lynch syndrome have more instances of cancer than expected. Ni Y, Zbuk KM, Sadler T, Patocs A, Lobo G, Edelman E, Platzer P, Orloff MS, Cells are free to multiply and grow out of control, and create noncancerous and cancerous growths inside and outside the body. Cowden syndrome, especially those found to have a germline PTEN mutation or PTEN hamartoma tumor syndrome (PHTS), is linked to many kinds of cancer. It is intended for informational purposes only. Small, smooth growths that form on your face (trichilemmomas). Hes finished participating in the clinical trial and has not been treated for lung cancer since. Although there arent standard guidelines for monitoring people with BRRS, your healthcare provider may recommend similar screening as with Cowden syndrome. When you have a rare disease, you have an obligation to give back, he says. Li-Fraumeni syndrome (LFS) is a cancer predisposition syndrome associated with high risks for a diverse spectrum of childhood- and adult-onset malignancies. Cowden syndrome causes lots of lumps and bumps, Jon says. 15;18(2):400-7. doi: 10.1158/1078-0432.CCR-11-2283. What are some potential complications of Cowden [2][8] Rarely, it is associated with clear cell renal cell carcinoma and papillary renal cell carcinoma. He tries to maintain as much normalcy as possible. Contact a health care provider if you have questions about your health. The lifetime risk of breast cancer for a woman diagnosed with CS is estimated to be 25% to 50%, a significant increase over the general population risk of 12% to 13%. BirtHoggDub syndrome (BHD), also HornsteinBirtHoggDub syndrome, HornsteinKnickenberg syndrome, and fibrofolliculomas with trichodiscomas and acrochordons[1] is a human, adult onset, autosomal dominant genetic disorder caused by the FLCN gene. In addition, amplifications and deletions in exonic regions are also tested. They can begin to appear in childhood or into a persons 20s or 30s. CS can be manageable with regular screenings and prompt treatment. Most people are in their 20s before they notice changes in their body that may be Cowden syndrome signs and symptoms. WebCompared with the general population, people with Cowden syndrome develop these cancers at younger ages, often beginning in their thirties or forties. WebPrenatal Before Birth Newborn Birth-4 weeks Infant 1-23 months Child 2-11 years Adolescent 12-18 years Adult 19-65 years Older Adult 65+ years Symptoms may start to 15;21(2):300-10. doi: 10.1093/hmg/ddr459. Cancer Center. Additional signs and symptoms can include an enlarged head (macrocephaly) and a rare, noncancerous brain tumor called Lhermitte-Duclos disease. In many older patients, obesity is present, especially around the [2][5] The most common mutation in this region is the insertion or deletion of a cytosine residue, found in 53% of BHD-affected families. Theyll assess your cancer risk to determine how often you should receive cancer screenings. WebCowden syndrome. Advertising on our site helps support our mission. People with Cowden syndrome are also more likely to develop more than one cancer during their lifetimes compared to the general population. 2021 Feb 11]. Rev Med. The fibrofolliculomas can be removed surgically, through curettage, shave excision, skin resurfacing, or laser ablation; this is not a permanent solution, though, as the tumors often recur. BirtHoggDub syndrome can manifest similarly to other diseases, which must be ruled out when making a diagnosis. The features of Cowden syndrome overlap with those of another disorder called Bannayan-Riley-Ruvalcaba syndrome. doi: 10.1530/ERC-18-0162. [5] Knockout mouse studies have shown that administration of rapamycin may mitigate the effects of FLCN mutations on kidneys and improve renal cancer prognoses because of folliculin's interaction with the mTOR pathway. [28] Further, DBHD regulates GSC maintenance downstream or in parallel of the JAK/STAT and Dpp signal-transduction pathways, which suggest that BHD regulates tumorigenesis by controlling stem cells in human {[29] Singh et al. However, following cancer screening guidelines helps prevent cancer or at least catch cancer at the earliest possible treatable stage. But because the symptoms are similar, if you have Cowden or Cowden-like syndrome, your healthcare provider will manage your condition like you had PHTS. Mutations in a few other genes are each responsible for a very small percentage of cases of Cowden syndrome and Cowden-like syndrome. 2010 Dec 22;304(24):2724-31. doi: Doctors may treat skin lesions with: Other treatments will depend on the presence of any cancers or structural irregularities. The projected estimated lifetime risks of cancer in individuals with PHTS range from 85 to 89% for any cancer, 67 to 85% for female breast cancer, 6 to 38% for He also has yearly colonoscopies performed by gastroenterologist Marta Davila, M.D., and breast checks performed by breast medical oncologist Banu Arun, M.D. Jon first confronted cancer in 2008, when he noticed a tight feeling in his throat. What are the odds of having two, unrelated, back-to-back cancers? Jon recalls thinking. Find out what helps constipation at home and when it's time to see a gastroenterologist. This is done by placing a thin, needle-like probe through the skin in the back and into the tumor. Before his thyroid surgery, Jons lungs had been X-rayed a common, pre-operative requirement. Submission of this form is subject to Healthgrades, Help Millions of people find the right doctor and care they need, Get immediate care and visit with providers from the comfort of your home, or anywhere, Urgent care centers can be faster and cheaper for situations that are not life threatening, Doctors and patients discuss the latest medical treatments and health tips, Search prescription drugs for why theyre used, side effects and more, Back and Neck Surgery (Except Spinal Fusion), View All Symptoms and Conditions Articles, https://medlineplus.gov/genetics/condition/cowden-syndrome/, https://rarediseases.info.nih.gov/diseases/6202/cowden-syndrome, https://www.ncbi.nlm.nih.gov/books/NBK525984/, https://dermnetnz.org/topics/cowden-disease, https://www.frontiersin.org/articles/10.3389/fmed.2021.658842/full, macrocephaly, or a larger-than-usual head, irregularities in the blood or lymphatic vessels. In: Adam MP, Mirzaa GM, Pagon RA, Wallace SE, Bean LJH, Gripp KW, Ask about your care teams approach to monitoring your health, including how your care plan can potentially improve your long-term health. The content on Healthgrades does not provide medical advice. The average age of He and other genetic disease survivors also host a panel discussion each year for genetic counseling students at MD Anderson UTHealth Graduate School of Biomedical Sciences. Multiple endocrine neoplasia type 1. Cancer. Gardner syndrome is a form of familial adenomatous polyposis (FAP) that is characterized by multiple colorectal polyps and various types of tumors, both benign (noncancerous) and malignant (cancerous). Is it common? An especially long head shape (dolichocephaly). If you have the mutation, your family members should also receive testing. The overgrowth is usually asymmetric, which means it affects the right and left sides of the body differently. This loss of heterozygosity is a common mechanism in cancer, and it is frequently detected in the renal cancers associated with BHD. His voice had become hoarse and gravelly. Cowden syndrome is a complicated disease with several different symptoms and related conditions. WebBirtHoggDub syndrome (BHD), also HornsteinBirtHoggDub syndrome, HornsteinKnickenberg syndrome, and fibrofolliculomas with trichodiscomas and acrochordons is a human, adult onset, autosomal dominant genetic disorder caused by the FLCN gene. Amemiya A, editors. Many wart-like growths on your face (cutaneous facial papules). These include multinodular goiter, medullary thyroid carcinoma, parotid oncocytoma, colonic polyposis,[12] connective tissue nevus, lipomas, angiolipomas, parathyroid adenomas, flecked chorioretinopathy, neurothekeoma, meningiomas, angiofibromas of the face,[3] trichoblastomas, cutaneous focal mucinosis, cutaneous leiomyoma, breast cancer, tonsillar cancer, colorectal cancer, sarcoma of the leg, lung cancer, melanoma, dermatofibrosarcoma protuberans, basal cell carcinoma, cutaneous leiomyosarcoma, and squamous cell carcinoma. Experts estimate it affects 1 in 200,000 people. Thats where you need to be. PTEN hamartoma tumor syndrome (PHTS) refers to a group of syndromes that involve a mutation, or change, in your PTEN gene. Theres no way to prevent PHTS, but regular cancer screenings can help catch cancer early, when its most treatable. Nonhereditary recurrent pneumothorax and/or pulmonary cysts can occur with Langerhans cell histiocytosis and lymphangioleiomyomatosis. Proteus syndrome If Id known the extent of your disease, the doctor told Jon, I would have sent you to MD Anderson the minute you walked through my door. WebPTEN mutation analysis identified a deletion in exon 2, confirming the diagnosis of Cowden syndrome. Multiple lipomas, GI hamartomatous polyps, trichilemmomas. The medicine eventually made Jon so nauseated that doctors were ready to downgrade his dosage. In some cases, such as when genetic tests dont find PTEN mutations, you may need several kinds of tests so your providers can rule out other conditions. Cowden syndrome: MedlinePlus Genetics This time, the diagnosis was clear: Jon had non-small cell lung cancer the most common form of the disease. Constipation is the reduced frequency of bowel movements, typically fewer than three per week. Syndrome This might include colon cancer, endometrial cancer and other types of cancer. Yehia L, Keel E, Eng C. The Clinical Spectrum of PTEN Mutations. You may also be at increased risk of developing malignant (cancerous) tumors. [2] Pneumothoraces have been seen in people as young as 7 and 16 years of age. Epub 2011 Oct 6. Endometrial, thyroid, and breast cancers occur more often in people with CS. However, early checkups can help doctors detect any cancers early and provide prompt treatment. PHTS is an inherited genetic condition, which means children can inherit the mutated gene from their biological parents. Its important to consult with a genetics professional so they can order PTEN gene testing. syndrome Find qualified telemedicine providers for a variety of symptoms and conditions. Anesthesiologist Vivian Porche, M.D., was by Jons side, as always. In a small set of people with Cowden syndrome, researchers found other mutated genes, including PIK3CA/AKT1, SDHB-D, KLLN and SEC23B. [11], Thyroid nodules[2] have been associated with the BirtHoggDub phenotype, present in 65% of individuals and 90% of families with the syndrome. They may eventually form tumors. The main complication associated with CS is the likelihood of developing cancer. In German Shepherd dogs, missense mutations in the canine ortholog of FLCN cause a similar phenotype to human BHDkidney cancers (in this case, multifocal renal cystadenocarcinoma) and skin tumors (nodular dermatofibrosis). Many wart-like growths in your mouth (oral mucosal papillomatosis). With PHTS, you inherit one working copy of the PTEN gene and one with the mutation. But there are a few things you should avoid doing. Cowden syndrome and Cowden-like syndrome are inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the condition and increase the risk of developing cancer. This means that only one parent has to pass down a copy of a mutated gene for their child to have the condition. [9] Though the types of tumors typically associated with BHD are considered less aggressive, cases of advanced or metastatic kidney cancer have been observed in people with the syndrome. As many as half of Americans who develop sepsis will die from it. Syndrome Policy. Blood vessel growths that appear through your skin (, Polyps in your upper gastrointestinal tract and colon (. Normally, you dont get breast cancer before age 60. A biopsied trichilemmoma, meaning tissue samples studied under a microscope show signs of trichilemmoma. THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. Lynch syndrome is a condition that increases the risk of many kinds of cancer. Cleveland Clinic Cancer Center provides world-class care to patients with cancer and is at the forefront of new and emerging clinical, translational and basic cancer research. The Lyda Hill Cancer Prevention Center provides cancer risk assessment, screening and diagnostic services. A small percentage of Cowden syndrome and Cowden-like syndrome are associated with variants in the WWP1gene. The cancer cells damage healthy tissue as they spread. [5][10] The cysts do not cause other symptoms[5] and lung function is usually normal. Currently GARD aims to provide the following information for this disease: Population Estimate: Fewer A CT scan ordered by a Dallas doctor revealed why. Additionally, the International Cowden Consortium has developed criteria for diagnosing Cowden syndrome. However, regular screenings may help prevent complications and improve your quality of life. The symptoms seen in each family are unique, and can include any combination of the three symptoms. He swallowed eight of the experimental pills each morning, then travelled to Houston each week to undergo a battery of tests that measured his bodys response to the drugs. Compared with the general population, people with Cowden syndrome develop these cancers at younger ages, often beginning in their thirties or forties. In Cowden syndrome, abnormal cells grow uncontrollably and dont die when they normally would. N Engl J Med. He refused. WebSymptoms of the disease most commonly manifest in the third and fourth decades of life, although it may onset at any age. Increased breast, endometrial and thyroid carcinoma. Cancer No. [5][8] People over 40 years old and men are more likely to develop kidney tumors, which are diagnosed at a median age of 48. The genitals may also be affected. The cysts can be detected by chest CT scan. H, Remzi B, Orloff MS, Eng C. A clinical scoring system for selection of patients Either white or mucosa-colored, they are discrete, small, and soft, and consist of fibrous tissue covered in thickened epithelium. Some of the most commonly identified genes include the PTEN, WWP1, and KLLN genes. mtDNA tRNA mutation. Doctors offered Jon two treatment options. Hamartomas (pronounced HA-mar-TOH-muhs) are among the obvious and most common signs of Cowden syndrome. PTEN is a tumor suppressor gene. That way, your healthcare providers can tailor treatment to your situation. Based on these similarities, researchers have proposed that Cowden syndrome and Bannayan-Riley-Ruvalcaba syndrome represent a spectrum of overlapping features known as PTEN hamartoma tumor syndrome (named for the genetic cause of the conditions) instead of two distinct conditions. That means they inherit one copy of the gene from each biological parent and have a 50% chance of inheriting the mutated gene. To diagnose Cowden syndrome, healthcare providers compare your situation with diagnostic criteria developed by medical professionals who specialize in genetic (inherited) cancer syndromes. A person can also receive a diagnosis of CS if they have one major and three minor criteria. Because chronic constipation can cause pain and bloating, it's understandable to seek quick constipation relief. It is considered to be under-diagnosed[3][6] because of the variability in its expression. This is a benign growth of blood vessels underneath the skin where blood vessels are normally found. Cowden syndrome is rare. [3] Other conditions have been reported to be associated, but may not be caused by the mutation in FLCN or may not be related at all. Growing up in El Paso, Jon Filbert loved collecting autographed Major League Baseball trading cards. Experts Almost everyone with Cowden syndrome develops hamartomas. It makes an enzyme that prevents uncontrolled cell growth that causes tumors.