1. Epithelial and soft tissue tumors of the tracheobronchial tree
Leslie Litzky, MD 
Chest Surgery Clinics 
Volume 13, Issue 1, Pages 1-40 (February 2003)
DOI: /S (02)

2. Fig. 1
(A) Endoscopic photograph of a bronchial papilloma. The exophytic polypoid excrescences are typical. Microscopically, this proved to be a mixed squamous cell and glandular papilloma. (Courtesy of Michael A. Grippi, Pulmonary, Allergy, and Critical Care Division, University of Pennsylvania Medical Center.) (B) Squamous papilloma of the trachea. This low-power photomicrograph highlights the branching central fibrovascular cores with a surface lined by benign squamous epithelium.
Chest Surgery Clinics  , 1-40DOI: ( /S (02) )

3. Fig. 1
(A) Endoscopic photograph of a bronchial papilloma. The exophytic polypoid excrescences are typical. Microscopically, this proved to be a mixed squamous cell and glandular papilloma. (Courtesy of Michael A. Grippi, Pulmonary, Allergy, and Critical Care Division, University of Pennsylvania Medical Center.) (B) Squamous papilloma of the trachea. This low-power photomicrograph highlights the branching central fibrovascular cores with a surface lined by benign squamous epithelium.
Chest Surgery Clinics  , 1-40DOI: ( /S (02) )

4. Fig. 2
Squamous cell carcinoma, right mainstem bronchus. The central location allowed this tumor to reach an appreciable size before detection.
Chest Surgery Clinics  , 1-40DOI: ( /S (02) )

5. Fig. 3
(A) Left mainstem bronchus resection for an endobronchial mucoepidermoid carcinoma. (B) The same mucoepidermoid carcinoma in cross-section, demonstrating an attachment to the bronchus, but invasion is limited to the superficial portion of the submucosa. (From Litzky LA. The pathology of non–small cell lung carcinomas. In: Fishman AP, Elias JA, Fishman JA, et al, editors. Pulmonary diseases and disorders, 3rd edition. New York, NY: McGraw-Hill; p. 1739–58; with permission.)
Chest Surgery Clinics  , 1-40DOI: ( /S (02) )

6. Fig. 3
(A) Left mainstem bronchus resection for an endobronchial mucoepidermoid carcinoma. (B) The same mucoepidermoid carcinoma in cross-section, demonstrating an attachment to the bronchus, but invasion is limited to the superficial portion of the submucosa. (From Litzky LA. The pathology of non–small cell lung carcinomas. In: Fishman AP, Elias JA, Fishman JA, et al, editors. Pulmonary diseases and disorders, 3rd edition. New York, NY: McGraw-Hill; p. 1739–58; with permission.)
Chest Surgery Clinics  , 1-40DOI: ( /S (02) )

7. Fig. 4
Endobronchial hamartoma. This low-power photomicrograph demonstrates the characteristic circumscription and lobulated architecture. There is a predominance of cartilaginous elements in this tumor that might lead to a misdiagnosis of chondroma.
Chest Surgery Clinics  , 1-40DOI: ( /S (02) )

8. Fig. 5
Inflammatory myofibroblastic tumor. The lesion is well circumscribed with variegations in color and consistency. This lesion might easily be mistaken for a more common lung carcinoma on radiographs and initial gross examination.
Chest Surgery Clinics  , 1-40DOI: ( /S (02) )