OA control group
tumor
TUMOR, CAVITY
A transverse subcostal or chevron incision was made to ensure excellent exposure. The fascia, rectus sheath, and lateral abdominal musculature were progressively divided to allow entry into the retroperitoneal cavity. If the operating space was still limited, the peritoneum was further incised. Adrenal vein control and tumor dissection procedures were similar to those in the TA group.