2002
DOI: 10.1046/j.1365-2559.2002.01508.x
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Follicular baso‐squamous melanocytic tumour of the skin

Abstract: The tumour showed differentiation towards the hair follicular bulb and the descriptive term of follicular baso-squamous melanocytic tumour is suggested.

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Cited by 7 publications
(5 citation statements)
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“…[23][24] In addition to the two aforementioned biphasic tumors, a third tumor, referred to as a follicular baso-squamous melanocytic tumor, has been identified and it too must be considered in the differential diagnosis. 25 This tumor consists of two distinct malignant epithelial components, with one component colonized by benign dendritic melanocytes. Centrally the tumor has features of a squamous cell carcinoma that exhibits tricholemmal keratinization, surrounded by a poorly differentiated basal cell carcinoma with matrical differentiation and colonized by dendritic melanocytes.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…[23][24] In addition to the two aforementioned biphasic tumors, a third tumor, referred to as a follicular baso-squamous melanocytic tumor, has been identified and it too must be considered in the differential diagnosis. 25 This tumor consists of two distinct malignant epithelial components, with one component colonized by benign dendritic melanocytes. Centrally the tumor has features of a squamous cell carcinoma that exhibits tricholemmal keratinization, surrounded by a poorly differentiated basal cell carcinoma with matrical differentiation and colonized by dendritic melanocytes.…”
Section: Discussionmentioning
confidence: 99%
“…The overlapping features of these bi-and triphasic tumors suggests that their pathogenesis may originate in a subpopulation of stem cells capable of multidirectional differentiation, and thereby it is highly likely that a continuum exists among these tumors. 7,25,26 In the present case, to exclude the possibility of either a collision of a melanoma with a SCC or the presence of a biphasic tumor, both the original biopsy and the excision were extensively sectioned. In all sections examined, the tumor was composed of a conventional acantholytic SCC colonized by bland dendritic melanocytes; therefore, the tumor was best categorized as a PSCC.…”
Section: Discussionmentioning
confidence: 99%
“…Single‐cell coexpression of these markers was seen in some of the cells in the case of Rosen et al. , 86 but not in the baso‐ and squamo‐melanocytic tumours 87–90 . Hanson et al.…”
Section: Epithelial Differentiationmentioning
confidence: 96%
“…Singlecell coexpression of these markers was seen in some of the cells in the case of Rosen et al, 86 but not in the basoand squamo-melanocytic tumours. [87][88][89][90] Hanson et al 88 have described a case of mixed small-cell melanoma with a micronodular basal cell carcinoma of the eyebrow. It recurred after 2 years with an identical morphology.…”
Section: Baso-and Squamo-melanocytic Tumoursmentioning
confidence: 99%
“…To date, only extremely rare additional cases have been reported, such as melanomas associated with pseudocarcinomatous hyperplasia 9,10 or other entities that combine biphenotypic characteristics in the same neoplasm. [11][12][13] The histopathological appearance of our case obviously differs from verrucous-hyperkeratotic melanoma, since the lack of epidermal hyperplasia and hyperkeratosis is evident.…”
Section: Commentmentioning
confidence: 99%