“…Third, we performed subtotal cholecystectomy for patients with severe scarring around Calot's triangle (29). PTGBD followed by DLC is useful for patients with complications or of advanced age (9,10,13,14,30). Regarding the timing of PTGBD, a recent report suggested that surgery with a short interval after PTGBD improved perioperative outcomes compared to surgery with long interval after PTGBD (31).…”