Electron microscope appearances of juvenile and Peutz-Jeghers polyps
نویسندگان
چکیده
منابع مشابه
Peutz-Jeghers polyps, dysplasia, and K-ras codon 12 mutations.
BACKGROUND Peutz-Jeghers syndrome (PJS) is a rare, autosomal dominant, polyposis syndrome, associated with an increased risk of gastrointestinal and extragastrointestinal malignancy. Occasionally dysplasia occurs in PJS polyps. AIMS In colorectal carcinomas, mutations in codon 12 of the K-ras oncogene are common and are found at similar frequency in precursor adenomas. Therefore, K-ras codon ...
متن کاملPeutz-Jeghers syndrome
Introduction Peutz-Jeghers syndrome (PJS) is characterized by: (i) autosomal dominant inheritance; (ii) cutaneous pigmentation; (iii) gastro-intestinal polyposis. In all, more than 300 cases have been described with a world-wide distribution and no racial predilection. In 1921 Peutz described 7 cases of multiple intestinal polyps associated with melanin spots on the lips, buccal mucosa and digi...
متن کامل[Peutz-Jeghers syndrome].
Peutz-Jeghers syndrome is an inherited disorder which usually debuts during childhood. It is characterized by mucocutaneous pigmentation and hamartomatous polyps in the gastrointestinal tract. Numerous reports indicate a high incidence of gastrointestinal and extraintestinal cancer in these patients, their appearance at a young age, as well as its association with ovarian and testicular tumors....
متن کامل[Peutz-Jeghers syndrome].
Peutz-Jeghers syndrome (PJS, MIM 175,2000) is a disease of autosomal dominant inheritance that is characterised by hamartomatous gastrointestinal polyps and mucocutaneous pigmentation. In addition to problems such as intussusception, PJS predisposes to cancers of several sites. The unusual combination of clinical features makes the identification of the defect underlying PJS particularly intere...
متن کامل[Peutz-Jeghers syndrome].
Peutz-Jeghers syndrome is a rare, autosomal dominant inherited disorder, which is characterized by mucocutaneous pigmentations, gastrointestinal polyposis and an increased risk of cancer. It is caused by germline mutations in the LKB1 tumour suppressor gene, as a result of which hamartomatous polyps can develop already at an early age, which may cause various complications, including abdominal ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Gut
سال: 1966
ISSN: 0017-5749
DOI: 10.1136/gut.7.3.265