Primary choriocarcinoma metastasizing to skeletal muscles, presenting as an abdominal wall mass: A rare presentation

Choriocarcinoma is a highly malignant tumor of the trophoblastic origin. Most cases are present within 1 year of antecedent pregnancy. We present an extremely rare case of choriocarcinoma of the anterior abdominal muscle in a 41-year-old female who presented as mass in anterior abdominal wall 4 months after undergoing a total abdominal hysterectomy with bilateral salpingo oophorectomy for a diagnosis of fibroid uterus. Laparotomy done for the mass revealed it to be an extraperitoneal mass within the rectus muscle that on histopathological examination was confirmed to be primary choriocarcinoma. Computed tomography scan revealed pulmonary metastases and patient was given combination chemotherapy to which she responded well.