Explain //This patient has clinical features of Cushing syndrome.
Because of its high-grade neuroendocrine nature,
small cell carcinomas can produce ectopic hormones including adrenocorticotropic hormone
(as in this case)
and antidiuretic hormone. Lambert–Eaton myasthenic syndrome (LEMS) is a well-known
paraneoplastic condition linked to small cell carcinoma.