نتایج جستجو برای: polyposis
تعداد نتایج: 11192 فیلتر نتایج به سال:
Background: Familial adenomatous polyposis (FAP) is the most common components polyposis syndromes. It incidence is for less than 1 percent of colorectal cancer cases. FAP is characterized by germline mutations in the adenomatous polyposis coli (APC) gene. Generally, there are hundreds to thousands of adenomatous polyps in colon and rectum of patients. The aim of the current study was to evalua...
BACKGROUND Sinonasal complications are common in children with cystic fibrosis (CF). Generally, those children with persistent symptoms of sinonasal polyposis are referred to an otorhinolaryngologic (ORL) physician for sinus surgery. Several studies have reported differences in clinical characteristics between CF patients with and without sinonasal polyps. OBJECTIVES To predict the presence o...
familial adenomatous polyposis (fap) is responsible for < 1% of colorectal cancer (crc) cases and is inherited as an autosomal dominant trait. patients generally present hundreds to thousands of adenomas and develop colorectal cancer by age 35- 40 if left untreated. here we report four patients with germline frameshift mutation (small deletion) at exon 15 of adenomatous polyposis coli (apc) tum...
BACKGROUND Patients with hamartomatous polyposis syndromes have increased risk for colorectal cancer (CRC). Although progression of polyps to carcinoma is observed, pathogenic mechanisms remain unknown. The authors examined whether familial hamartomatous polyps harbor defects in DNA mismatch repair (MMR), and assayed for somatic mutation of PTEN, a gene inactivated in the germline of some hamar...
BACKGROUND & AIMS An attenuated form of familial adenomatous polyposis has been described, but the phenotype remains poorly understood. METHODS We performed genetic testing on 810 individuals from 2 attenuated familial adenomatous polyposis kindreds harboring an identical germline adenomatous polyposis coli gene mutation. Colonoscopy was performed on mutation-positive persons. RESULTS The d...
introduction: the surgical management of chronic frontal sinus disorders remains a challenge for rhinologists. the aim of this study was to evaluate the result of draf iii in a series of patients who underwent this procedure. materials and methods: twenty patients were included in this study. demographic data, history of prior surgery, asthma, aspirin sensitivity and lund–mackay score were r...
BACKGROUND Multiple lymphomatous polyposis of the gastrointestinal tract can be associated with the B-cell lymphoma variant, mantle cell lymphoma, with most cases having been described in patients who are more than 50 years-of-age. A rare case of multiple lymphomatous polyposis due to mantle cell lymphoma is reported in a 34-year-old man. CASE REPORT A 34-year-old man presented with paroxysmal ...
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