A 63-year-old woman with chronic bronchitis presents with shoness of breath. A chest X-ray reveals a 2-cm "coin lesion" in the upper lobe of the left lung. A CT-guided lung biopsy is obtained. Which of the following describes the histologic features of this lesion if the diagnosis is hamaoma?
Localized, disordered differentiation during embryonic development results in a hamaoma Not strictly neoplasms Contain varying combinations of cailage, ducts or bronchi, connective tissue, blood vessels, and lymphoid tissue. Ectopic islands of normal tissue (choice C), called choristoma, may also be mistaken for true neoplasms.
Benign neoplasm of epithelial origin
Disorganized normal tissue
Ectopic islands of normal tissue
Granulation tissue
General Concepts