Worsening Ileal Stenosis Caused by Multiple Ectopic Gastric Mucosa Lesions in an Elderly Patient: A Novel Case with a Long Observation Period

Mycophenolate Mofetil for Steroid-Refractory Immune-Related Hepatitis and Sclerosing Cholangitis Following Neoadjuvant Chemoimmunotherapy in Non-Small Cell Lung Cancer: A Case Report