Immunohistochemical detection of chlamydia trachomatis in sexually transmitted infectious proctitis.

Introduction: Since 2003, a progressive increase in sexually transmitted infections (STI), presented as proctitis, has been described in homosexual men. In 2013 Arnold et al. described microscopic features that enable pathologists to formulate a histological diagnosis of STI related proctitis.

[Neuroendocrine hiperplasia in linfocitic and ulcerative colitis].

Introduction: Some authors have found increase of neuroendocrine cells in microscopic colitis and ulcerative colitis.

Objective: The aim of this study is to evaluate the presence of neuroendocrine cells in ulcerative colitis and lymphocytic colitis and collagenous colitis.

Materials And Methods: Immunohistochemistry was performed to identify neuroendocrine cells through marker chromogranin A (CgA).

[Concurrent lymphocytic colitis and microscopic enteritis in patients with chronic diarrhea].

Introduction: Lymphocytic colitis and microscopic enteritis are relatively common causes of chronic diarrhea and it is characterized by an intraepithelial lymphocytic infiltrate. There have been no previous reports of coexistence between these 2 pathologies.

Objective: To describe histological and clinical characteristic in patients with coexistence of lymphocytic colitis and microscopic enteritis.