title: The quarterly case: malignant small cell tumor of the thyroid.
mesh_terms: D018288:Carcinoma, Small Cell / Q000175:diagnosis / Q000648:ultrastructure*; D003937:Diagnosis, Differential; D006801:Humans; D008223:Lymphoma / Q000648:ultrastructure; D008297:Male; D008875:Middle Aged; D013964:Thyroid Neoplasms / Q000175:diagnosis / Q000648:ultrastructure*