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Soft tissue, left ear ("left ear keratosis"), excision - keratinaceous debris. | Soft tissue, left ear ("left ear keratosis"), excision - keratinaceous debris. | ||
==Cholesteatoma== | ==Cholesteatoma 1== | ||
===Microscopic description=== | ===Microscopic description=== | ||
The section shows lamellar keratin, abundant reactive histiocytes and multinucleated giant cells. Lymphocytes and plasma cells are present. There is dystrophic calcification. Fragments of bone are seen. | The section shows lamellar keratin, abundant reactive histiocytes and multinucleated giant cells. Lymphocytes and plasma cells are present. There is dystrophic calcification. Fragments of bone are seen. | ||
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===Final diagnosis=== | ===Final diagnosis=== | ||
Soft tissue, left ear ("left ear keratosis"), excision - keratinaceous debris and inflammation (consistent with cholesteatoma). | Soft tissue, left ear ("left ear keratosis"), excision - keratinaceous debris and inflammation (consistent with cholesteatoma). | ||
==Cholesteatoma 2== | |||
===Microscopic description=== | |||
The section shows lamellar keratin, a fragment of squamous epithelium and fragments of bone. No significant inflammation is identified. | |||
===Final diagnosis=== | |||
Soft tissue, left ear ("left ear keratosis"), excision - keratinaceous debris, squamous epithelium and bone (consistent with cholesteatoma). |
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