title: Cancer presenting as mental illness.
mesh_terms: D000230:Adenocarcinoma / Q000150:complications*; D000368:Aged; D018288:Carcinoma, Small Cell / Q000150:complications*; D003704:Dementia / Q000209:etiology*; D003866:Depressive Disorder / Q000209:etiology*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000150:complications*; D008297:Male; D008875:Middle Aged; D010051:Ovarian Neoplasms / Q000150:complications*