Episodic Severe Ectopic Adrenocorticotropic Hormone Syndrome by Metastatic Appendiceal Neuroendocrine Tumor. - Desai, Ruchi; Sidra, F N U; Jia, Liwei; Polanco, Patricio M; Mutar, Salwan Al; Hamidi, Oksana (JCEM Case Reports, 2025)