8042/3 Oat cell carcinoma
|Bronchus and lung|
|ICD-O-3 topography code:||C34|
A neuroendocrine carcinoma composed of small malignant cells which are often said to resemble "oat cells" under the microscope. Small cell carcinoma most often affects the lungs. Clinically, this is often a rapidly growing cancer that spreads to distant sites early.