These are benign neoplasms composed of a mixture of cartilage, fat, and fibromyxoid tissue. This circumscribed nodule, 1.5 cm in diameter, has the pearly appearance of cartilage. The glistening, translucent, cyst-like area is the fibromyxoid tissue.
Cartilaginous hamartoma
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These are benign neoplasms composed of a mixture of cartilage, fat, and fibromyxoid tissue. This circumscribed nodule, 1.5 cm in diameter, has the pearly appearance of cartilage. The glistening, translucent, cyst-like area is the fibromyxoid tissue. | ||||||
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The tumor is sharply circumscribed and surrounded by normal lung (bottom). Cartilage lies to the right, and lobules of fibromyxoid tissue to the left are covered by non-neoplastic respiratory epithelium (arrow). Diagnosis by fine needle aspiration requires finding fibromyxoid tissue or cartilage. | ||||||
See also Case 21
Laryngeal papilloma
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Laryngotracheal papillomas are benign tumors covered by non-keratinizing, squamous epithelium. Solitary or multiple, they are caused by human papillomaviruses. Often recurrent, malignant transformation sometimes ensues. Paranuclear, viropathic vacuolation may be seen at high magnification. | ||||||
See also Case 8
