This case involves a sixty-two-year-old female patient who underwent a total abdominal hysterectomy along with the removal of her right Fallopian tube several years ago. The patient was involved in a motor vehicle accident and presented to the emergency room with lower left-sided back pain, with pressure and burning upon urination. The patient had a CT of the abdomen performed that showed a large mutiloculated structure in the pelvis compressing the bladder. The working diagnosis by the radiologist was a peritoneal inclusion cyst and a secondary diagnosis of less likelihood was a left ovarian cyst neoplasm. A pelvic MRI was performed for further investigation which revealed a left-sided mass suspicious for carcinoma. The patient underwent an exploratory laparotomy and the surgeon focused his area of resection on the right side of the abdomen when the preoperative plan was the left-sided mass. Additionally, during this procedure, the patient sustained serosal tears of the small intestine and large bowel as a result of inadequate surgical technique.