Mucinous ovarian carcinoma
D. Laparotomy with removal of mass
The key to the correct diagnosis is recognizing that a unilateral abdominal mass larger than 10 cm is characteristic of a primary ovarian neoplasm, for which complete surgical resection is the recommended treatment. A needle biopsy (choice A) may not provide adequate tissue to make an accurate diagnosis. Percutaneous drainage (choice B) is not recommended because this procedure may cause spillage of malignant cells into the abdomen. Diagnostic laparoscopy (choice C) would not remove the abdominal mass.
Mucinous ovarian tumors are categorized as benign, borderline, or malignant (mucinous ovarian carcinoma).1 Mucinous ovarian tumors are typically unilateral, multicystic, and large, with a mean size of 10 cm if benign; 16 cm if borderline, and 20 cm if malignant.2