# Pelvic Diagnostic Challenges of Appendiceal Neoplasm Mimicking a Hematosalpinx: A Case Report

## TL;DR

A rare case of an appendix tumor mistaken for a fallopian tube condition highlights the need for accurate diagnosis to preserve fertility.

## Contribution

Highlights a rare case where an appendiceal tumor mimicked a gynecological condition, emphasizing the importance of considering this diagnosis in reproductive-age patients.

## Key findings

- Appendiceal mucinous neoplasm was misdiagnosed as hematosalpinx using imaging techniques.
- Fertility preservation was considered for the patient due to her reproductive age and primary infertility.
- The case underscores the need to include appendiceal tumors in the differential diagnosis of adnexal masses.

## Abstract

Appendiceal mucinous neoplasms are rare and can be easily misdiagnosed as adnexal masses. Fertility is a concern in cases requiring cytoreductive surgery involving the ovaries and if hyperthermic intraperitoneal chemotherapy is considered. We present the case of a 35-year-old patient with primary infertility who was suspected to have a hematosalpinx on ultrasonography and magnetic resonance imaging (MRI) but was found to have an appendiceal mucinous neoplasm on laparoscopy. Fertility preservation was offered to this patient. Appendiceal mucinous neoplasms should be considered in the differential diagnosis of patients in their reproductive years presenting with adnexal masses. Fertility preservation should be discussed with these patients, especially when gonadotoxic treatments are planned.