Nakamura polyp, an extraordinarily rare finding

The inflammatory myoglandular or Nakamura polyp is a very rare polyp, with about 100 cases having been described in the literature. It has specific endoscopic and histological characteristics, making its knowledge of it very important for its proper diagnosis. Its differential diagnosis with other types of polyps is of vital importance, both histologically and with respect to its endoscopic follow-up. We present the clinical case of a Nakamura polyp as an incidental finding in a screening colonoscopy.

Biliary obstruction secondary to duodenal follicular lymphoma with papillary involvement

Duodenal-type follicular lymphoma is a clinical variant of follicular lymphoma located in the intestine, presenting as multiple small polyps. The estimated frequency is 1/7000 people and extraduodenal involvement is rare. It predominantly affects middle-aged women, although some cases of young patients have been published in the literature. They are usually located in the second periampullary portion of the duodenum. It is diagnosed incidentally or after performing an imaging test due to non-specific digestive symptoms (abdominalgia, diarrhea or hyporexia). The prognosis is usually favorable without specific treatment5.