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Dermatology Practical & Conceptual Jul 2021
PubMed: 34414014
DOI: 10.5826/dpc.1103a89 -
JAAD Case Reports Sep 2020
PubMed: 32885010
DOI: 10.1016/j.jdcr.2020.07.008 -
Clinical Case Reports Apr 2020Intralesional triamcinolone acetonide is an effective treatment for acanthoma fissuratum, and recognition of this condition can negate the need for unnecessary surgical...
Intralesional triamcinolone acetonide is an effective treatment for acanthoma fissuratum, and recognition of this condition can negate the need for unnecessary surgical intervention.
PubMed: 32274040
DOI: 10.1002/ccr3.2708 -
JAAD Case Reports Oct 2021
PubMed: 34522750
DOI: 10.1016/j.jdcr.2021.08.016 -
Dermatology Online Journal Apr 2019Acantholytic dyskeratotic acanthoma is a rare variant of epidermal acanthoma characterized pathologically by the presence of acantholysis and dyskeratosis. Few cases...
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.
Topics: Acanthoma; Aged; Dermoscopy; Diagnosis, Differential; Humans; Liver Transplantation; Male; Neoplasms, Multiple Primary; Skin Neoplasms
PubMed: 31046909
DOI: No ID Found -
Medicina Oral, Patologia Oral Y Cirugia... Sep 2007Oral melanoacanthoma (MA) is a rare, benign pigmented lesion, similar to cutaneous MA, characterized by hyperplasia of spinous keratinocytes and dendritic melanocytes.... (Review)
Review
Oral melanoacanthoma (MA) is a rare, benign pigmented lesion, similar to cutaneous MA, characterized by hyperplasia of spinous keratinocytes and dendritic melanocytes. The pathogenesis of oral MA remains uncertain, although its clinical behavior is suggestive of a reactive origin. The most common intraoral sites are the buccal mucosa, lip, palate and gingiva. The average age of presentation is 28 years, mainly in blacks, with a strong female predilection. The oral melanotic macule (MM) is a small, well-circumscribed brown-to-black macule that occurs on the lips and mucous membranes. The etiology is not clear and it may represent a physiologic or reactive process. The average age of presentation is 43 years, with a female predilection. A biopsy is recommended to distinguish these lesions from each other and from other oral melanocytic lesions. We depict four cases each of oral MA and MM, affecting Caucasian and Latin American mestizo patients. The clinicopathological features of these cases reflect its ample spectrum, and to the best of our knowledge, it is the first example of oral MA affecting a Caucasian boy reported in the English literature. Therefore oral MA and MM should be considered in the differential diagnosis of pigmented lesions in the oral mucosa in these populations.
Topics: Acanthoma; Adult; Child; Female; Humans; Immunohistochemistry; Male; Melanosis; Mouth Diseases; Mouth Neoplasms
PubMed: 17767102
DOI: No ID Found -
Dermatology Practical & Conceptual Jul 2018
PubMed: 30116672
DOI: 10.5826/dpc.0803a18 -
Anais Brasileiros de Dermatologia 2019Melanoacanthoma is a rare variant of seborrheic keratosis, which is notable for dark pigmentation and fast radial growth, making it difficult to distinguish from...
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 distributed throughout the lesion. Based on these findings, it was not possible to classify this lesion as clearly benign, so it was excised. Histopathologic evaluation and immunostain were consistent with melanoacanthoma.
Topics: Acanthoma; Aged; Dendritic Cells; Dermoscopy; Humans; Keratosis, Seborrheic; Male; Melanocytes; Microscopy, Confocal; Scalp Dermatoses; Skin Neoplasms
PubMed: 31789261
DOI: 10.1016/j.abd.2019.01.002 -
Anais Brasileiros de Dermatologia 2020The 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...
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. The present article reports a case of hidroacanthoma simplex and discusses the dermoscopy of this phenomenon.
Topics: Acanthoma; Aged, 80 and over; Biopsy; Dermoscopy; Epidermis; Female; Humans; Skin Neoplasms
PubMed: 31932162
DOI: 10.1016/j.abd.2019.03.004 -
Annals of Dermatology Dec 2020Epidermolytic acanthoma (EA) is a rare benign tumor, which usually appears as a solitary small papule. However, there are a few case reports of multiple EA, most of...
Epidermolytic acanthoma (EA) is a rare benign tumor, which usually appears as a solitary small papule. However, there are a few case reports of multiple EA, most of which occurs on the genital area. Cases of multiple EA may mimic verruca vulgaris, condyloma accuminatum, seborrheic keratosis, and bowenoid papulosis, and therefore, can be easily misdiagnosed. A 78-year-old male presented with a 2-week history of discrete, small skin-colored papules around the anus. The other case involved a 47-year-old male with a 5-year history of skin-colored papules on the scrotum. Skin biopsy of both cases revealed a well-demarcated papular lesion characterized by compact hyperkeratosis, perinuclear vacuolization, and reticular degeneration in the granular and upper spinous layer with coarse basophilic keratohyalin granules. Epidermal invagination was consistent with a cup-shaped type of EA. Both cases tested negative for human papillomavirus. We report typical cases of multiple EA, which should be considered as the differential diagnosis of small skin-colored papules in the anogenital area, to prevent the misdiagnosis.
PubMed: 33911795
DOI: 10.5021/ad.2020.32.6.512