[Benign lympho-epithelial lesion (Blel) of the parotid. Godwin's tumor. A case with cystic ectasia and calcinosis].

We report a case of a benign lymphoepithelial lesion of the parotid gland known as Godwin's tumor. This swelling of the parotid gland, appears as a tumor clinically as well as in scintigraphy and echography. The individual features of this tumor are recognized only during the histological examination: massive infiltration of the lobules of the parotid by a proliferative lymphoid tissue with differentiation to germinal centers and atrophy of the glandular acini. The treatment consists of a superficial parotidectomy. The frozen section avoids a total parotidectomy. In our case, the histological picture is quite particular due to the extensive cystic ductal dilatation and the presence of some calcifications. This aspect permit us to bring together the BLEL and the pseudotumoral calcinosis of the parotid gland. Those two lesions, occur under a context of disfunction, and they could be associated to a Gougerot-Sjögren (GS) syndrome. The BLEL could be considered as the pseudotumoral form of an isolated GS which could be completed after many years with the apparition of auto anti-bodies. The BLEL evoluates as a benign tumor but it's correlation with a malignant lymphoma or a lymphoepithelial carcinoma is also possible. Therefore it is important to follow-up these patients clinically, hematologically and immunologically after their parotidectomy.