Lung Small Cell Carcinoma

**Semantic type:** Neoplastic Process

**Definition:** A highly aggressive carcinoma with neuroendocrine differentiation that arises from the lung. It is characterized by the presence of malignant small cells and more than 10 mitoses per 2 mm2. Necrosis is frequently seen. Metastatic disease is usually present at the time of diagnosis.

**Synonyms:** - Lung Oat Cell Carcinoma - Lung Small Cell Neuroendocrine Carcinoma - Oat Cell Carcinoma of Lung - Oat Cell Carcinoma of the Lung - Oat Cell Lung Carcinoma - SCLC - Small Cell Carcinoma of Lung - Small Cell Carcinoma of the Lung - Small Cell Lung Cancer - Small Cell Lung Cancer - Small Cell Lung Carcinoma - Small Cell Neuroendocrine Carcinoma of Lung - Small Cell Neuroendocrine Carcinoma of the Lung - Small cell lung cancer - small cell lung cancer