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539 results
  • Differences in dermoscopic findings between early and mature clear cell acanthoma. [Journal Article]
    J Dermatol. 2020 Jun; 47(6):646-650.Iseki K, Negishi M, … Matsue H
  • Clear cell acanthoma (CCA) is a rare benign epidermal tumor that is difficult to diagnose by visual inspection. Conversely, its diagnosis by dermoscopy is relatively easy owing to the characteristic serpiginous arrangement of coiled vessels, sometimes described as the "string-of-pearls" formation. However, in few published reports, the dermoscopic diagnosis of mature CCA has been reported. Here, …
  • Dermatoscopy of the Borst-Jadassohn phenomenon in hidroacanthoma simplex. [Case Reports]
    An Bras Dermatol. 2020 Jan - Feb; 95(1):95-97.Souza BCE, Luce MCA, … Valente NYS
  • The Borst-Jadassohn phenomenon is a morphological finding that consists of the presence of well-defined nests of cells located in the spiny stratum of an acanthotic epidermis. One of the neoplasms where this phenomenon is found is hidroacanthoma simplex. This neoplasm is considered the intraepidermal form of the eccrine poroma. Despite its benign nature, malignant transformations are reported. Th…
  • Melanoacanthoma: a potential pitfall of reflectance confocal microscopy. [Case Reports]
    An Bras Dermatol. 2019 Nov - Dec; 94(6):747-750.Porto ACS, Blumetti TP, … Braga JCT
  • Melanoacanthoma is a rare variant of seborrheic keratosis, which is notable for dark pigmentation and fast radial growth, making it difficult to distinguish from melanoma. Histologically, it is characterized by proliferation of keratinocytes and dendritic melanocytes. The authors report a scalp lesion, fast growing, suspected by dermoscopy and confocal microscopy examination, with dendritic cells…
  • Epidermolytic Acanthoma Mimicking Condyloma: A Case Report. [Case Reports]
    Dermatopathology (Basel). 2019 Apr-Jun; 6(2):23-27.Dupont A, Marescassier H, Kaya G
  • Epidermolytic acanthoma is a rare benign tumor that appears as a solitary papule or, rarely, multiple small papules on the trunk and extremities, or on genitalia. They are generally asymptomatic, although they can be pruritic. The clinical presentation is often misleading, and the lesions are often misdiagnosed histologically and frequently confused with condyloma acuminatum. Here, we report a ca…
  • Large Cell Acanthoma of the Conjunctiva: Clinicopathologic and Immunohistochemical Features. [Journal Article]
    Ocul Oncol Pathol. 2019 Aug; 5(5):312-318.Jakobiec FA, Cortes Barrantes P, … Mandeville J
  • Large cell acanthoma (LCA) was first described as a lesion on sun-exposed skin. All LCAs feature keratinocytes twice the size of normal cells (cytomegaly). Although infrequently diagnosed in the skin, it has been even more rarely described by ophthalmic pathologists in the eyelid skin and the conjunctiva. This report describes the third case of a conjunctival epithelial LCA, with the first publis…
  • Pale (Clear) Cell Acanthoma of the Palate. [Journal Article]
    Head Neck Pathol. 2020 Jun; 14(2):535-541.Argyris PP, Ho D, … Koutlas IG
  • Clear cell acanthoma (CCA), also known as pale cell acanthoma, represents a rare benign epidermal tumor with strong predilection for the lower extremities of middle-aged individuals and no frank gender preference. The etiology of CCA is poorly understood, although a localized psoriasiform reaction is favored. Herein, we report on the clinicopathologic and immunohistochemical features, and HPV sta…
  • StatPearls: Clear Cell Acanthoma [BOOK]
    . StatPearls Publishing: Treasure Island (FL) Benedetto Conrad J. CJ Western University of Health Sciences Athalye Leela L BOOK
  • Clear cell acanthoma (CCA), also known as “Degos acanthoma” and “acanthome cellules Claires of Degos and Civatte,” was first described by Degos et al. in 1962.[1]  It is a rare, benign tumor of unknown etiology.  Although most commonly located on the lower extremities, clear cell acanthomas can also appear on the trunk, forearm, face, inguinal area, and few cases of nipple and areola lesions have…
  • Clear Cell Acanthoma with Atypical Location -Case Report and Literature Review. [Case Reports]
    Curr Health Sci J. 2018 Oct-Dec; 44(4):397-400.Pătraşcu V, Geoloaica L, Ciurea RN
  • Clear cell acanthoma is an uncommon, benign lesion, usually present in middle-aged and elderly patients. It looks like an erythematous papule, solitary, with squama at the periphery, regularly located on the lower limbs. We present the case of an 80-year-old female, who was admitted in the Dermatology Clinic of Craiova for an infiltrative plaque, erythematous-squamous-crusty, well delimited, with…
  • Onychocytic matricoma. [Case Reports]
    An Bras Dermatol. 2019 Mar-Apr; 94(2):214-216.d'Almeida LFV, Jeunon T, … Nakamura R
  • Onychocytic matricoma is a newly described tumor of the nail matrix. Clinically, it presents with localized thickening of the nail plate and melanonychia. Histologically, it represents a benign acanthoma of onychocytes. There are 8 cases reported in the literature. A 12-year-old girl presented with localized melanonychia and concurrent thickening of the nail plate restricted to the area of pigmen…
  • Solitary oral epidermolytic acanthoma: Case report of a rarely diagnosed entity. [Case Reports]
    Oral Surg Oral Med Oral Pathol Oral Radiol. 2019 Dec; 128(6):e208-e213.Argyris PP, Slama ZM, … Koutlas IG
  • Epidermolytic acanthoma represents a rare localized form of epidermolytic hyperkeratosis, which resembles warty lesions and shows a strong predilection for the genital skin of males. Here, we present an oral solitary epidermolytic acanthoma affecting a 71-year-old Caucasian man. Clinically, the lesion was white, well-circumscribed, and sessile, measuring 2 mm in diameter and located on the poster…
  • Multiple acantholytic dyskeratotic acanthomas in a liver-transplant recipient. [Case Reports]
    Dermatol Online J. 2019 Apr 15; 25(4)Kanitakis J, Gouillon L, … Ducroux E
  • Acantholytic dyskeratotic acanthoma is a rare variant of epidermal acanthoma characterized pathologically by the presence of acantholysis and dyskeratosis. Few cases have been reported until now, one of them in a heart-transplant patient. We present here a new case of this rare lesion that developed in a liver-transplant patient and review the salient features of this uncommon condition.
  • Expression of Connexin 43 (Cx43) in Benign Cutaneous Tumors With Follicular Differentiation. [Journal Article]
    Am J Dermatopathol. 2019 Nov; 41(11):810-818.Fernandez-Flores A, Varela-Vazquez A, … Fonseca E
  • CONCLUSIONS: Cx43 expression is preserved in benign cutaneous tumors with follicular differentiation and the patterns of Cx43 expression in benign cutaneous tumors with follicular differentiation parallel those of their alleged anatomical counterparts in 5 types (either totally or partially). This preservation might be related to the good behavior of the entities studied.
  • Multiple Epidermolytic Acanthomas: Rare Vulval Lesions Which May be Mistaken for Viral Warts. [Case Reports]
    Int J Gynecol Pathol. 2020 Jan; 39(1):93-96.Irwin S, Karim A, … McCluggage WG
  • Epidermolytic acanthoma is a rare benign lesion that most often presents as a solitary or multiple small papular lesions on the trunk, face, limbs or external male genitalia. Only a small number of cases have been reported occurring on the vulva and clinically and histologically they may mimic and be misdiagnosed as viral warts. We report 2 cases of multiple epidermolytic acanthomas localized to …
  • Clear Cell Acanthoma on the Areola. [Case Reports]
    Dermatol Online J. 2018 Jul 15; 24(7)Borda LJ, Mervis JS, … Lev-Tov H
  • Clear cell acanthoma (CCA) is a rare, benign cutaneous condition most often seen on the lower extremities. Lesions are of variable morphology and have been described as polypoid, pigmented, giant, and cystic lesions. Although no racial or gender predilection has been reported, CCA on the breast is a very rare finding that has been observed mainly in young Korean women. Herein, we describe a case …
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