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Background: Mature cystic teratoma (MCT) also known as dermoid cyst is the commonest benign neoplasm of the ovary constituting 10-20% of all the ovarian tumours. They are also the most common ovarian germ cell tumour commonly seen between 20-40 years. They are bilateral in 8-15% of cases.
Objective: To report a rare case of bilateral ovarian mature cystic teratoma occurring in a primipara.
Methods: The case note of the patient was retrieved, relevant information about the patient, her clinical presentation and management were reviewed. Relevant review of the literature on the subject was also done.
Case Report: The patient was a 23 year old primipara (alive) referred from a general hospital. She presented at the gynaecological clinic of Rivers State University Teaching Hospital (RSUTH) with a month history of abdominal distension and lower abdominal pain. There was associated nausea, vomiting and passage of watery stool. There was no history of fever, weight loss, vaginal discharge, urinary frequency or retention of urine. There was generalized abdominal tenderness more marked in the lower abdomen. She had exploratory laparotomy and bilateral ovarian cystectomy. She did well post operatively and was discharged home with a two weeks appointment to the gynaecological clinic.
Conclusion: Diagnosis of dermoid cyst is made earlier with pelvic ultrasonography when it is usually small. Unusual finding of a mature huge ovarian cystic teratoma is possible due to delayed presentation for diagnosis and treatment.
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