Abstract

KAMERGORODSKY, Gil et al. Evaluation of the endometriosis histological classification observed in specimens of women affected by superficial and deeply infiltrating pelvic endometriosis. Rev. Bras. Ginecol. Obstet. [online]. 2007, vol.29, n.11, pp. 568-574. ISSN 0100-7203.  http://dx.doi.org/10.1590/S0100-72032007001100004.

PURPOSE: to evaluate the histological differentiation pattern in superficial peritoneum lesions and in deeply infiltrating endometriosis (DIE) in utero-sacral ligament, bowel (rectum and sigmoid colon) and rectovaginal septum. METHODS: this prospective non-randomized study included 139 patients. Of the total, 234 biopsies were obtained (179 with DIE - Deeply Group - and 55 superficial endometriosis - Superficial Group). From the 179 DIE lesions (Depply Group), 15 were obtained from rectovaginal septum, 72 from rectosigmoid nodules and 92 from utero-sacral ligament. Biopsies were classified in well-differentiated glandular pattern, undifferentiated glandular, mixed glandular differentiation and pure stromal disease, based on specific morphological classification. RESULTS: in the Depply Group (DIE), 33.5% of the biopsies showed undifferentiated glandular pattern and 46.9% mixed glandular pattern. In the Superficial Group, there was the predominance of the well-differentiated glandular pattern (41.8%). Comparing specifically the different localizations of the biopsies of DIE lesions (Deeply Group), a predominance of mixed pattern in bowel nodules (61.1%) was noted. CONCLUSIONS: it was possible to conclude that there is a predominance of well-differentiated glandular pattern in superficial endometriosis, a predominance of mixed undifferentiated in deeply pelvic endometriosis and, specifically studying endometriosis from the rectum and sigmoid colon, there was a predominance of the mixed pattern.

Keywords : Endometriosis [diagnosis]; Endometriosis [pathology]; Peritoneum [pathology]; Biopsy [classification].