I. Epithelial Tumors
| |
A. Benign
| |
1. Papillomas
| |
a. Squamous cell papilloma |
| |
b. "Transitional" papilloma |
|
| |
2. Adenomas
| |
a. Pleomorphic adenoma ("mixed"
tumor) |
| |
b. Monomorphic adenoma |
| |
c. Others |
|
|
| |
B. Dysplasia/carcinoma in situ |
| |
C. Malignant
| |
1. Squmous cell carcinoma (epidermoid carcinoma)
| |
Variant:
| |
a. Spindle cell (squamous carcinoma) |
|
|
| |
2. Small cell carcinoma
| |
a. Oat cell carcinoma |
| |
b. Intermediate cell type |
| |
c. Combined oat cell carcinoma |
|
| |
3. Adenocarcinomas
| |
a. Acinar Adenocarcinoma |
| |
b. Papillary adenocarcinoma |
| |
c. Bronchioloalveolar carcinoma |
| |
d. Solid carcinoma with mucous formation |
|
| |
4. Large cell carcinoma
| |
Variants:
| |
a. Giant cell carcinoma |
| |
b. Clear cell carcinoma |
|
|
| |
5. Adenosquamous carcinoma |
| |
6. Carcinoid tumor |
| |
7. Bronchial gland carcinoma
| |
a. Adenoid cystic carcinoma |
| |
b. Mucoepidermoid carcinoma |
| |
c. Others |
|
| |
8. Others |
|
|
| II. Soft Tissue Tumors Primary in the Lung |
III. Mesothelial Tumors (Pleural Tumors)
| |
A. Benign mesothelioma (solitary fibrous tumor, localized
fibrous mesothelioma) |
| |
B. Malignant mesothelioma
| |
1. Epithelial |
| |
2. Fibrous (spindle cell, sarcomatous including
desmoplastic) |
| |
3. Biphasic |
|
|
IV. Miscellaneous Tumors
| |
A. Benign |
| |
B. Malignant
| |
1. Carcinosarcoma |
| |
2. Pulmonary blastoma |
| |
3. Malignant melanoma |
| |
4. Malignant lymphoma |
| |
5. Others |
|
|
| V. Secondary Metastatic Tumors |
| VI. Unclassified Tumors |
VII. Tumor-like Lesions
| |
A. Hamartoma |
| |
B. Lymphoproliferative lesions |
| |
C. Tumorlet |
| |
D. Eosinophilic granuloma |
| |
E. "Sclerosing hemangioma" |
| |
F. Inflammatory pseudotumor |
| |
G. Others |
|
| |
