trichilemmoma

trichilemmoma

 [trik″ĭ-lem-o´mah]
a benign neoplasm of the lower outer root sheath of the hair.

trich·i·lem·mo·ma

(trik'i-le-mō'mă),
A benign tumor derived from outer root sheath epithelium of a hair follicle, consisting of cells with pale-staining cytoplasm containing glycogen; multiple trichilemmomas are present on the face in Cowden disease.
Synonym(s): tricholemmoma
[trichi- + G. lemma, husk, + -ōma, tumor]

trichilemmoma

/trich·i·lem·mo·ma/ (-lem-o´mah) a benign neoplasm of the lower outer root sheath of the hair.

trich·i·lem·mo·ma

(trik'i-le-mō'mă)
A benign tumor derived from outer root sheath epithelium of a hair follicle, consisting of cells with pale-staining cytoplasm containing glycogen; multiple trichilemmomas are present on the face in Cowden disease.
[trichi- + G. lemma, husk, + -ōma, tumor]

trichilemmoma

a rare, benign neoplasm of the lower outer root sheath of the hair; resembles trichoepithelioma.
References in periodicals archive ?
Trichoepithelioma should clinically be differentiated from basal cell carcinoma, trichilemmoma, trichofolliculoma, syringoma and colloid milium.
In the third stage of their natural course, benign and malignant epithelial neoplasms can develop, including trichoblastoma, syringocystadenoma papilliferum, sebaceous epithelioma, basal cell carcinoma, and trichilemmoma.
Diagnostic value of CD34 immunostaining in desmoplastic trichilemmoma.
The benign tumors are: Trichofolliculoma, Pilar sheath acanthoma, Fibrofolliculoma, Trichodiscoma, Trichoepithelioma, Trichoblastoma, Trichoadenoma, Pilomartricoma, Trichilemmoma, Trichilemmal horn and Proliferating trichilemmal cyst.
Histologic features of a trichilemmoma include lobular epidermal growth extending into the dermis, with glycogen-containing clear or pale-staining cells evident within the area of lobular growth and peripheral palisading of basophilic cells.
They include benign adnexal tumors such as trichoblastoma syringocystadenoma papilliferum trichilemmoma sebaceoma nodular hidradenoma hidrocystoma and eccrine poroma.
Consider the diagnosis if you spot more than one trichilemmoma.
Solitary trichilemmoma typically presents as a single, small, skin-colored papule, either with a smooth or verrucous surface, most commonly seen on the face of older individuals.
6 The benign skin conditions asssociated with cutanous horns7,8 include soolar keratosis, angioma, angiokeratoma, cutaneous leishmaniasis, lichenoid keratosis, epidermal nevi, epidermal acanthomaa, seborrheic keratosis, sebaceous adenoma, trichilemmoma, sebaceous molluscum and verruca vulgaris.
Histologic features of a trichilemmoma include lobular epidermal growth extending into the dermis, with glycogen containing clear or pale-staining cells evident within the area of lobular growth and peripheral palisading of basophilic cells.
Individual papules may be misdiagnosed as basal cell carcinoma (BCC), intradermal melanocytic nevus, seborrheic keratosis, sebaceous hyperplasia, syringoma, angiofibroma, trichilemmoma, steatocystoma, TE, and hamartoma of sebaceous follicles.
Slide 2 Slide 3 11 AK SCC in situ 29 Trichilemmoma Trichilemmoma 63 SCC SCC 72 AK SCC in situ 84 BCC BCC 95 Nevus Nevus 147 SCC in situ SCC in situ 203 Nevus Dysplastic nevus 215 BCC BCC 279 Dysplastic nevus Dysplastic nevus (severe) 306 Hemangioma Hemangioma 310 Nevus Nevus 395 SCC in situ SCC in situ 459 BCC BCC 464 SCC in situ SCC in situ * AK indicates actinic keratosis; SCC, squamous cell carcinoma; SK, seborrheic keratosis; and BCC, basal cell carcinoma.