title: [Cytopathological test performed during colonoscopy in the diagnosis of colorectal stenosis].
abstract: The etiological diagnosis for the colorectal strictures can be very difficult. With the colonoscopy, it was possible to obtain samples with direct vision of the lesion. Consequently, the cytologic efficiency improved, with similar or even better results than histopathology. In the present study (107 patients) it was used the cytopathology performed during colonoscopy. After a specimen was obtained, it was smeared on glass slide, fixed in 95% alcohol, stained by HE, and examined microscopically, with conclusions during the procedure. The results were compared and further correlated to the histopathology of surgical specimen or based on clinical follow-up in those case not submitted to operation. The results showed a striking degree of correlation between both exams. For the cytopathology there were no inconclusive results, false-negative were less frequent than with histopathology, and only one case of false-positive (rectal villus adenoma) was observed. Considering the type, localization and perviousness of the lesion, similar conclusions were drawn, and did not affect the results, except that there were more false-negatives in both exams when the lesions were impervious. The cytopathological and histopathological studies were both highly sensitive and specific for the diagnosis of carcinoma. In conclusion, cytopathology performed during colonoscopy is safe and efficient in the study of colorectal strictures, which contributes to improve the orientation of these patients.
authors.affiliation: Disciplina de Moléstias do Aparelho Digestivo e Gastrocentro de Faculdade Ciências Médicas da Universidade Estadual de Campinas-UNICAMP.
authors.forename: J R
authors.initials: JR
authors.lastname: Góes
authors.forename: M A
authors.initials: MA
authors.lastname: Trevisan
authors.forename: J J
authors.initials: JJ
authors.lastname: Fagundes
authors.forename: C S
authors.initials: CS
authors.lastname: Coy
authors.forename: M A
authors.initials: MA
authors.lastname: Peres
authors.forename: M de C
authors.initials: Mde C
authors.lastname: Ramos
authors.forename: R R
authors.initials: RR
authors.lastname: de Medeiros
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002277:Carcinoma / Q000175:diagnosis* / Q000648:ultrastructure; D003113:Colonoscopy; D015179:Colorectal Neoplasms / Q000175:diagnosis* / Q000648:ultrastructure; D005260:Female; D006801:Humans; D007415:Intestinal Obstruction / Q000209:etiology; D008297:Male; D008875:Middle Aged; D012680:Sensitivity and Specificity
vernacular_title: Exame citopatológico realizado durante colonoscopia no diagnóstico das estenoses colorretais.