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Histopathological diagnosis of 32 rare primary pulmonary neoplasms (National Matsudo Hospital and National Cancer Hospital East – Japan)
| Types of malignant tumours (n = 20) | Patients no (%) |
| Epithelial tumours | |
| Adenocystic carcinoma | 1 (5) |
| Mucoepidermoid carcinoma | 2 (10) |
| Bronchial gland mixed tumour | 2 (10) |
| Myoepitelioma | 1 (5) |
| Soft tissue tumours | |
| Leiomyosarcoma | 1 (5) |
| Epitheloid haemangioendothelioma | 1 (5) |
| Hemangiopericytoma | 1 (5) |
| Miscellaneous tumours | |
| Carcinosarcoma | 3 (15) |
| Malignant melanoma | 1 (5) |
| Malignant lymphoma | 6 (30) |
| Coriocarcinoma | 1 (5) |
| Types of benign tumours (n = 12) | Patients no (%) |
| Epithelial tumours | |
| Papillomas | 3 (25) |
| Adenomas | 1 (8.3) |
| Soft tissue tumours | |
| Fibromas | 1 (8.3) |
| Lipoma | 3 (25) |
| Leiomyoma | 3 (25) |
| Miscellaneous tumours | |
| Meningioma | 1 (8.3) |
Histopathological diagnoses of 80 rare primary pulmonary neoplasms (Mayo Clinic, 1980–1990)
| Types of neoplasm | Patients no (%) |
|---|---|
| Lymphoma | 33 (41) |
| • Small cell | 22 |
| • Large cell | 6 |
| • Mixed cell | 5 |
| Carcinosarcoma | 16 (20) |
| Mucoepidermoid carcinoma | 12 (15) |
| Malignant fibrous histiocytoma | 4 (5) |
| Malignant melanoma | 3 (4) |
| Fibrosarcoma | 3 (4) |
| Leiomyosarcoma | 3 (4) |
| Angiosarcoma | 2 (2) |
| Haemangiopericytoma | 2 (2) |
| Osteosarcoma | 1 (1) |
| Blastoma | 1 (1) |