A proposal for a comprehensive risk scoring system for predicting postoperative complications in octogenarian patients with medically operable lung cancer: JACS1303.

Objectives: Although some retrospective studies have reported clinicopathological scoring systems for predicting postoperative complications and survival outcomes for elderly lung cancer patients, optimized scoring systems remain controversial.

Methods: The Japanese Association for Chest Surgery (JACS) conducted a nationwide multicentre prospective cohort and enrolled a total of 1019 octogenarians with medically operable lung cancer. Details of the clinical factors, comorbidities and comprehensive geriatric assessment were recorded for 895 patients to develop a comprehensive risk scoring (RS) system capable of predicting severe complications.

A clinicopathological and immunohistological re-evaluation of adenosquamous carcinoma of the lung.

Since the World Health Organization histological criteria were published in 1999, several studies have focused on adenosquamous carcinoma of the lung. Therefore, we aimed to clinicopathologically re-evaluate this tumor using immunohistochemical methods. In our hospital, there have been 21 surgically resected adenosquamous carcinomas.