Atezolizumab-induced myasthenia gravis in metastatic hepatocellular carcinoma: a case report and literature review - Rajani Gubbala; Arumugam Ponnuswamy; Nikhileshwar C. Reddy; Sanath Kandem; Nikhil Pathi; Senthil J. Rajappa (European Journal of Case Reports in Internal Medicine, 2026)