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Acral lentiginous melanoma: indolent subtype with long radial growth phase.
MedLine Citation:
PMID:  24556899     Owner:  NLM     Status:  In-Data-Review    
: Acral lentiginous melanoma (ALM) is the most common type of cutaneous melanoma in Asian populations. Traditionally, ALM was believed to have a poorer prognosis than other subtypes of cutaneous melanoma because of its aggressive behavior. However, in Asians, there have been several unusual case reports that have shown only subtle melanocytic proliferation despite clinically malignant manifestations. We performed a retrospective study of 13 patients with ALM. We reviewed the clinical histories, histopathologies, and immunohistochemical staining from these patients. Clinically, the lesions were characterized by a brown to black pigmented patch with irregular borders and variegated pigmentation on the sole, heel, or finger. Histopathologically, most specimens revealed only bland scattered proliferation of atypical melanocytes without marked cellular atypia or dermal invasion. However, some of the lesions were suspected to progress to the invasive stage, into the papillary dermis after a long period of time. Although cytological atypia of the melanocytes is not sufficient to ALM in situ, the melanocytic proliferation pattern, dermal inflammation, and correlation with clinical presentation would suffice in making the correct diagnosis of ALM in situ. In these cases, more biopsies of other areas should be recommended for the precise diagnosis and early complete excision in accordance with ALM in situ.
Jin Yong Kim; Mira Choi; Seong Jin Jo; Hye Sook Min; Kwang Hyun Cho
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The American Journal of dermatopathology     Volume:  36     ISSN:  1533-0311     ISO Abbreviation:  Am J Dermatopathol     Publication Date:  2014 Feb 
Date Detail:
Created Date:  2014-02-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7911005     Medline TA:  Am J Dermatopathol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  142-7     Citation Subset:  IM    
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