• Although previously called hamartoma, these lesions develop over years and
are not congenital.
• Patients over 40; women outnumber men
• Rare cause of solitary lesion detected on radiographic studies
• Often found on
chest xray or other radiographic study and diagnosed as part of an
evaluation to rule out carcinoma.
|General Gross Description|
• Solitary nodule or "coin lesion"
• May be firm and glassy depending on the amount of cartilage within the
|General Micro Description|
• Composed of mature cartilage, fibrous tissue, and fat as well as
occasional blood vessels and respiratory epithelium.
• Cotran RS, Kumar V, Robbins SL: Robbins Pathologic Basis of Disease. 5th edition. Philadelphia, W.B. Saunders, 1994, pp. 727.