Struma ovarii with pseudo-meigs’ syndrome and raised cancer antigen-125 levels masquerading as an ovarian carcinoma: Case report and literature review

The monodermal teratoma struma ovarii is a rare ovarian tumour; however,struma ovarii presenting with pseudo-meigs’ syndrome and raised cancer antigen (ca)-125 levels is even rarer. in elderly patients,this presentation can potentially lead to a misdiagnosis of a malignant ovarian carcinoma,resulting in unnecessary extensive surgery. we report a 55-year-old female who presented to the lok nayak jai prakash narayan hospital,new delhi,india,in 2016 with progressive abdominal discomfort,fatigue and abdominal distention. clinical and radiological features were indicative of a malignant ovarian tumour and ascites. serum ca-125 levels were elevated at 258 u/ml. a left-sided salpingo-oophorectomy was performed,after which the serum ca-125 levels normalised. there was no evidence of recurrence at a six-month follow-up. a frozen section procedure confirmed the diagnosis of a struma ovarii. this rare condition should be considered as a differential diagnosis in patients presenting with ovarian masses,ascites and raised ca-125 levels. © 2017,sultan qaboos university. all rights reserved.