Pelvic tuberculosis is a rare condition that poses diagnostic difficulties. We studied three cases of this entity that presented with different symptoms: long term fever, altered general condition and abdominal overdistention. The radiological work-up made us suspect an ovarian pathology. A laparotomy was performed for our three patients and samples were taken. The histological study pointed to peritoneal tuberculosis. Medical treatment for tuberculosis was given. The evolution was favourable in two cases and a death in the third case. Pelvic tuberculosis can simulate ovarian cancer, diagnostic difficulties are encountered. The histological study confirms the diagnosis.