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trichoepithelioma examination, trichoepithelioma diagnosis

trichoepithelioma examination, trichoepithelioma diagnosis


Common examination of trichoepithelioma

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Skin lesionsSkinPain in dermatology health care departmentSkin lesions to a variety of skins...
Skin rashSkinDermatosisA rash is a skin...
The pathological structure of multiple hair epithelioma and single hair hair epithelioma is the same. Tumors located in the dermis are composed of many basal-like cells, with palisade-like basal cells arranged in the periphery and mesh-like sieve-like structures arranged in the center. There is obvious fibrous interstitial wrapping around the mass. The tumor contains multiple horn cysts with complete keratinization in the center. There may be calcium deposition around the cyst, and the staining is deep blue. If the horn cyst is ruptured, the giant cell reaction of foreign body may appear in the interstitium.

Histopathology: Multiple trichoepithelioma lesions have distinct boundaries. Keratocyst is the most special histological feature. It consists of completely keratinized center and surrounding basophil granulocytes. The morphology of the latter is the same as that of the cells in basal cell epithelioma. Keratinization abruptly, unlike gradual and incomplete keratinization in squamous cell carcinoma keratinization beads. One or several layers of cells with eosinophilic cytoplasm and large oval bullous nuclei, commonly found between basophils and keratocysts. The second major component of this tumor is tumor island, which is composed of basophils like basaloid cell tumor, and often arranged in lace-like or adenoid reticular structure. Occasionally or aggregated into solid lumps. The cells around these tumor islands are arranged in a grid and surrounded by interstitial cells containing a moderate amount of fibroblasts. Single trichoepithelioma is only used to show damage highly differentiated into hair structure. Solitary lesions with relatively low differentiation into hair structure are best classified as keratinizing basal cell carcinoma. Therefore, the skin lesions that are conditionally diagnosed as solitary trichoepithelioma should have both many keratocysts and frustrated dermal papillae, and basal cell carcinoma appears only in a few areas.

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