Histologic examination of "fascia" used in colporrhaphy

OBJECTIVE: To perform a histologic examination of tissue identified as fascia and used during colporrhaphy. METHODS: In patients undergoing primary anterior and posterior colporrhaphy, biopsies were taken from three surgically distinct vaginal tissues types: the wall, the "fascia," and areolar tissue. The biopsies were placed in formalin, identified numerically, and sent to pathology for staining with hematoxylin-eosin, Masson trichrome for collagen, Movat for elastin, and immunoperoxidase stain for actin in smooth muscle. Simultaneous photographs were taken of the biopsy sites. The histologic diagnosis was compared with the surgical diagnosis. RESULTS: A total of 60 samples were taken from five women. The specimens from two of these patients were disqualified. The pathologist made the following histologic diagnosis for each type of surgical specimen: vaginal wall, mucosa and underlying connective tissue; fascia, moderately dense connective tissue with smooth muscle; areolar tissue, loose connective tissue. The histologic appearance of the "fascia" was indistinguishable from the deeper aspects of the vaginal wall. It was composed of the same proportions of smooth muscle, elastin, and collagen. Using the histologic appearance as the "gold standard," the accuracy of the surgical diagnosis was: "vaginal wall," 12 of 12 (100%); "fascia," seven of 12 (58%); and "areolar tissue," eight of 12 (67%). CONCLUSIONS: The surgical "fascia" used during colporrhaphy consists of moderately dense connective tissue with smooth muscle similar to the deep aspects of the vaginal wall, is the same in both the anterior and posterior compartments, and is an artifact of the surgical dissection used to separate the vaginal wall from the underlying organs. (Obstet Gynecol 2001;98:794-8. (C) 2001 by the American College of Obstetricians and Gynecologists).