HISTOLOGICAL-FINDINGS IN A FALLOPOSCOPICALLY RETRIEVED ISTHMIC PLUG CAUSING REVERSIBLE PROXIMAL TUBAL OBSTRUCTION

We present the case of a 33-year-old woman with a 10 year history of i nfertility. Transvaginal falloposcopy revealed a proximal tubal occlus ion (PTO) on the right due to a tissue plug. The plug was removed duri ng dilatation of the tubal lumen. After the procedure patency for dye was restored. Histological and immunohistochemical findings-for the fi rst time, to the best of our knowledge, performed in a falloposcopical ly retrieved plug-revealed the diagnosis of an inflammatory polyp aris ing from the tubal mucosa with focal calcifications. Local obstructive inflammatory residues of a previously treated tubal endometriosis, wh ich was accompanied by features of salpingitis isthmica nodosa, are co nsidered the most likely cause for this condition. Other possible aeti ological factors responsible for PTO are discussed.