Peritoneal Tuberculosis Mimicking Ovarian Cancer: Gynecologic Ultrasound Evaluation with Histopathological Confirmation

Peritoneal tuberculosis (TBP) is a very rare condition, accounting for about 1–2% of all tuberculosis cases. The diagnosis of TBP can be easily mistaken for advanced ovarian cancer (AOC) or peritoneal carcinoma because of overlapping laboratory and clinical findings. We reported the ultrasound characteristics of a case of TBP in a 67-year-old woman who presented to our institute with a 1-month history of intermittent lower abdominal pain, fever, and asthenia. Overall, 20 biopsy-retrieved specimen histopathological features were suggestive of peritoneal tuberculosis. Gynecologic ultrasound revealed increased adnexa with multiple nodular formations spread across the surface, suggestive of caseous nodules. Although this is a rare occurrence, clinicians should consider TBP as a differential diagnosis of ovarian or peritoneal cancer.