Histologia comparativa entre conduto peritoniovaginal e saco herniário,em meninos com criptorquia e hérnia inguinal indireta

Abstract

It is not clear if the hernia sac and processus vaginalis (PV) are the same structure and have similar histology. There are some studies investigating the morphology of hernia sac and the PV and most of them investigated immunohistochemically the presence of specific structures, mainly the smooth muscle, but with a small number of patients. The aim of the present study was to compare the histology of PV and hernia sacs obtained exclusively from boys with inguinal hernia, and undescended testis. We performed a general comparative histological study, without looking for specific tissues. Samples of PV (n = 61) and hernia sacs (n = 68) obtained from boys operated with undescended testis (n = 58) and inguinal hernia (n = 64) respectively, were stained with hematoxylin-eosin for optical qualitative microscope analysis. The histological structures of each group of samples were compared by the same pathologist. Both groups were similar regarding their frequency, age, race, and the side of the pathology. The most prevalent histological findings were connective tissue, smooth muscle, mesothelium, nervous elements, striated muscle and mesonephric remnants with no statistical difference between the groups. In conclusion, hernia sac and PV shares a similar histology when analyzed qualitatively by optical microscopy with hematoxylin-eosinstain.