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A trichilemmal cyst (or pilar cyst) is a common cyst that forms from a hair follicle, most often on the scalp, and is smooth, mobile, and filled with keratin, a protein component found in hair, nails, skin, and horns. Trichilemmal cysts are clinically and histologically distinct from trichilemmal horns, hard tissue that is much rarer and not ...
Pilomatricoma is a benign skin tumor derived from the hair matrix. [2] [3] These neoplasms are relatively uncommon and typically occur on the scalp, face, and upper extremities.
English: Histopathology of a trichilemmal cyst, from internal (top) to external (bottom): - Solid eosinophilic-staining keratin. - Swollen pale keratinocytes, which increase in height closer to the interior. - Small, cuboidal, dark-staining basal epithelial cells in a palisade arrangement, with no distinct intercellular bridging. - Fibrous capsule.
Cock's peculiar tumour is a sebaceous cyst linked growth that can resemble a squamous cell carcinoma. [1] The name is given after a 19th-century English surgeon Edward Cock. [2] The proliferating cyst is usually solitary, but it often arises from a simple trichilemmal cysts in the hair follicle epithelium and these are multiple in 70% of cases ...
Proliferating trichilemmal cysts (also known as a pilar tumor, proliferating follicular cystic neoplasm, proliferating pilar tumor, and proliferating trichilemmal tumor) [1] is a cutaneous condition, characterized by proliferations of squamous cells forming scroll-like structures.
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Cystic acne can cause pain, shame and lasting scars. Here's what causes it. Can skin cancer appear in areas not exposed to the sun? Skin cancer can absolutely appear in areas of the skin that tend ...
Primary cutaneous adenoid cystic carcinoma; Primary neuroendocrine carcinoma of the skin; Primary small cell carcinoma of the skin; Proliferating epidermoid cyst; Proliferating epithelial cyst; Proliferating follicular cystic neoplasm; Proliferating pilar tumor; Proliferating trichilemmal cyst; Proliferating trichilemmal tumor; Pseudocyst of ...