Lymphoepithelioma-Like Carcinoma of the Skin High magnification of lymphoepithelioma-like carcinoma of the skin (LELCS) shows a prominent lymphohistiocytic infiltrate obscuring a background of large, undifferentiated epithelioid-appearing cells .
TERMINOLOGY
Abbreviations
• Lymphoepithelioma-like carcinoma of skin (LELCS)
Definitions
• Poorly differentiated carcinoma, most likely variant of squamous cell carcinoma (SCC), with prominent inflammatory infiltrate mimicking lymphoepithelioma-like carcinoma of nasopharynx
ETIOLOGY/PATHOGENESIS
Unknown
• No proven relationship with Epstein-Barr virus (EBV), unlike nasopharyngeal lymphoepitheliomas
CLINICAL ISSUES
Epidemiology
• Incidence
Extremely rare variant of SCC; < 70 cases reported to date
• Age
Typically occurs in elderly patients
• Sex
M > F
Site
• Most common in head and neck region
Presentation
• Nodular erythematous lesion
Treatment
• Surgical approaches
Complete excision is definitive treatment, similar to invasive SCC
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