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Difference between revisions of "Dermal cysts"
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=====Alternate===== | =====Alternate===== | ||
The section shows hair-bearing skin with a deep sinus containing large clusters of neutrophils, abundant plasma cells, hemosiderin-laden macrophages and multinucleated giant cells. Benign fibrofatty tissue with scant inflammation completely surrounds the lesion in the plane of section. There is no squamous lining within the sinus. No nuclear atypia is identified. | The section shows hair-bearing skin with a deep sinus containing large clusters of neutrophils, abundant plasma cells, hemosiderin-laden macrophages and multinucleated giant cells. Benign fibrofatty tissue with scant inflammation completely surrounds the lesion in the plane of section. There is no squamous lining within the sinus. No nuclear atypia is identified. | ||
=====Sinus versus cyst===== | |||
The section shows hair-bearing skin with a cyst/sinus lined by benign squamous epithelium containing keratin. The surrounding dermis has a mixed inflammatory infiltrate, predominantly consisting of plasma cells and lymphocytes. Multinucleated giant cells are present. No significant nuclear atypia is identified. | |||
=Less common= | =Less common= | ||