Włókniak jajnika

A rare benign ovarian tumor of sex cord / stromal origin characterized by an abdominal mass which may present with abdominal pain, distension, or menorrhagia, among others, or may also be asymptomatic. Association with ascites and hydrothorax is known as Meigs syndrome. The tumor can be solid and/or cystic in nature. Histologically it features bundles of spindle cells forming variable amounts of collagen, without cellular atypia or atypical mitoses.