Case Report: Ovarian dysgerminoma with pseudo-Meigs syndrome in a child.

Ovarian dysgerminoma is a rare pediatric germ cell tumor, and its association with pseudo-Meigs syndrome (PMS) is exceedingly uncommon. PMS is characterized by massive pleural effusions and ascites accompanying a pelvic mass, which often leads to clinical misdiagnosis. This report describes the case of a 15-year-old female patient who presented with abdominal distension, chest tightness, and significant pleural and ascitic effusions. Following surgical resection of the tumor, the effusions resolved rapidly. Postoperative pathology confirmed the diagnosis of ovarian dysgerminoma. The patient received adjuvant chemotherapy post-surgery, recovered well, and showed no evidence of recurrence during a 9-month follow-up period.