A 50-year-old man arrives at the clinic for an evaluation before undergoing left total knee arthroplasty. A person's medical history is important when it comes to osteoarthritis. The patient does not use tobacco. A 1.5-cm round lesion in the periphery of the right upper lobe of the lung is visible on a preoperative chest x-ray. Further imaging studies indicate a pulmonary hamartoma. If a transthoracic biopsy were performed, which of the following microscopic features would be most consistent with this diagnosis?

Question

Quizplus · Accepted Answer

Eductional Objective: Hamartomas are common, slow-growing, benign lung neoplasms with nodules of disorganized, mature connective tissue (e.g., cartilage, fat) and entrapped respiratory epithelium. They are frequently detected by imaging as well-circumscribed, peripheral, solitary lung lesions.

A 50-Year-Old Man Arrives at the Clinic for an Evaluation