title: [Microscopic colitis].
abstract: BACKGROUND
  Microscopic colitis is responsible for a proportion of difficult diagnosis cases with chronic diarrhea. Diagnosis is clinically suspected when chemical and macroscopic examination result negative and is made only by histopathologic findings.
  
  
  OBJECTIVE
  To describe clinical, biochemical, colonoscopic, and histologic features and the treatment response of four cases with microscopic colitis.
  
  
  METHODS
  We inform on the findings in four females patients presenting with chronic watery diarrhea with normal biochemical and colonoscopic tests.
  
  
  RESULTS
  In these cases, diagnoses mode were lymphocytic colitis two and collagenous colitis two. The long term duration of watery diarrhea was 5 months. The average number of depositions were 10 in 24 h. Diagnosis was made after microscopic examination of the colonic mucosa in the absence of endoscopic abnormalities and normal chemistries. All patients had a satisfactory response to treatment.
  
  
  CONCLUSIONS
  The diagnosis of microscopic colitis is made by histopathology findings. The therapeutic response is generally satisfactory.
authors.affiliation: Clínica de Gastroenterología, Fundación Clínica Médica Sur, Torre de Hospital 3er. piso. Puente de Piedra No. 150, Col. Torriello Guerra, CP 14050, Tlalpan, México, DF. jlizardie@hotmail.com
authors.forename: Javier
authors.initials: J
authors.lastname: Lizardi-Cervera
authors.forename: Segundo
authors.initials: S
authors.lastname: Morán-Villota
authors.forename: Eduardo
authors.initials: E
authors.lastname: Hinojo-Rivas
authors.forename: Ricardo
authors.initials: R
authors.lastname: Reynoso-Mendoza
authors.forename: José Manuel
authors.initials: JM
authors.lastname: Correa-Rovelo
authors.forename: Raúl
authors.initials: R
authors.lastname: Pichardo-Bahena
authors.forename: Misael
authors.initials: M
authors.lastname: Uribe-Esquivel
mesh_terms: D000328:Adult; D002908:Chronic Disease; D003092:Colitis / Q000150:complications / Q000188:drug therapy / Q000473:pathology*; D003967:Diarrhea / Q000209:etiology; D005260:Female; D006801:Humans
vernacular_title: Colitis microscópica.