title: Spindle-cell carcinoid tumor of lung. Cytologic, histopathologic and ultrastructural features.
mesh_terms: D002276:Carcinoid Tumor / Q000473:pathology* / Q000648:ultrastructure; D006801:Humans; D008175:Lung Neoplasms / Q000473:pathology* / Q000648:ultrastructure; D008297:Male; D008875:Middle Aged