Diagnosis is normally made by thoracotomy and biopsy. The regional lymph nodes are normally removed as these may show evidence of spread. Bronchoscopy is not usually useful as these lesions tend to lie in the perifery of the lung. Fine needle aspirates may be not be sufficient to make the diagnosis. Blood tests are normal. CT shows a solitary nodule with may have some calcium present. PET scans may be positive.
Pulmonary sclerosing pneumocytoma
Mesothelioma
Sarcomatoid carcinoma of the lung
Giant-cell carcinoma of the lung
Pulmonary capillary hemangiomatosis
Lymphomatoid granulomatosis
Adenocarcinoma of the lung
Hemangioendothelioma