Staging system used for gallbladder cancer. Stage 1, confined to mucosa; stage 2, extending into muscularis; stage 3, transmural with extension into serosa; stage 4, all layers involved; stage 5, invasion into adjacent tissues or distant metastases.
InsideSurgery Medical Information Blog
Details of surgical procedures, pathophysiology, signs and symptoms, and treatment of medical diseases,medical and surgical eponyms, and surgeons and surgery in the news