[Malignant non-Hodgkins lymphoma manifested in an ovarian tumor. Five case reports].

Five cases of non-Hodgkin malignant lymphoma (NHML) presenting as ovarian tumours are reported. All corresponded to disseminated lymphomatous disease, none was of low grade. Ultrasound showed a solid, most often homogeneous, hypoechoic, bilateral mass in 4 of 5 cases. Its association with many lymph nodes and mainly parenchymal localisation suggested of the NHML. Only histologic and immunohistochemical findings may provide the final diagnosis. The biopsy for those studies should be obtained as least invasively as possible because treatment of NHML is chemotherapy.