Uncovering the Unknown: Granulomatous Peritonitis After Right Ovarian Cystectomy at a Tertiary Care Center in South India-A Case Report.

Background. Granulomatous peritonitis is a rare postoperative complication caused by a delayed hypersensitivity reaction to foreign substances. It can be challenging to diagnose owing to its vague presentations, and its possibility is often overlooked. Tubercular peritonitis and peritoneal carcinomatosis are the 2 crucial differential diagnoses that need to be taken into account. However, making a clinical differentiation between these 2 entities is challenging and necessitates a careful histopathological and microbiological analysis. Case Presentation. In this report, we present the case of a 28-year-old female who developed granulomatous peritonitis following a right ovarian cystectomy. The diagnosis was confirmed by histopathological examination. Conclusion. We must be aware of this rare entity, which, if left untreated, could have serious consequences, and consider its possibility in cases where the patient complains of abdominal pain after any abdominal procedure. We hope to provide insights into the importance of histopathological examination in aiding a confirmatory diagnosis of this entity.