Open adrenalectomy through a makuuchi incision: A single institution's experience.

BACKGROUND: Surgical techniques for adrenalectomy have evolved substantially over the last century. Although minimally invasive approaches are favored for benign disease, open adrenalectomy remains the gold standard for large tumors and those concerning for malignancy. Most reports describe the use of midline, subcostal, or thoracoabdominal incisions for open adrenalectomy. We studied our experience with the Makuuchi incision, designed to optimize exposure and minimize denervation of the abdominal wall.

METHODS: All open adrenalectomies at the University of Rochester from 2009 to 2017 were retrospectively reviewed. Patient demographic characteristics, intraoperative details, and postoperative complications were investigated. Surgical site infection and hernia rates of Makuuchi incision were compared with non-Makuuchi incision patients and with published standards. The study was approved by the university Institutional Review Board.

RESULTS: A total of 41 adrenalectomies were performed via Makuuchi incision. Population statistics included a mean age of 51.7 (19-86) years, a mean body mass index of 29.7 (17.3-45.8), and a mean tumor diameter of 8 cm (3.1-26 cm). Fourteen (34%) required multivisceral resection. Twenty-one (51%) were previous or current smokers, and 9 (22%) had hypercortisolemia. Median duration of stay was 6 days (4-73). Incisional hernia occurred in 5 patients (12%) and surgical site infection in 3 patients (7%), 2 patients had Cushing syndrome and 1 was immunosuppressed. Pain was managed with patient-controlled epidural anesthesia or patient-controlled anesthesia with postoperative day 1 daily morphine equivalents equating to 0.5 mg of hydromorphone q2h. Among 15 non-Makuuchi incision patients, there were 2 hernias (13%), 2 surgical site infections (13%), and 1 case of postoperative pneumonia.

CONCLUSION: The Makuuchi incision is well tolerated and affords outstanding exposure of the adrenals and adjacent viscera. Incisional hernia and surgical site infection rates were favorable compared with published rates for midline or subcostal incisions, despite an obese population with a high incidence of hypercortisolism and immunosuppression.