Miwa Minamitani, Hideaki Tsuyoshi, Tatsushi Naito, Yasunari Nakamoto, Makoto Orisaka. Successful conservative management of hepatic portal venous gas complicating severe immune-related gastrointestinal injury during pembrolizumab-based concurrent chemoradiotherapy for cervical cancer: a mechanistic case report. Frontiers in Oncology 2026; 16doi: 10.3389/fonc.2026.1942174