CADM1 and TIAM1 Expressions in Mycosis Fungoides: Diagnostic Significance and Association With Histopathological Parameters
A skin protein marker reliably distinguishes cutaneous lymphoma from common eczema, especially in early stages where diagnosis is hardest.
Immunohistochemical analysis of 150 cases showed CADM1 expression differentiates MF from inflammatory dermatoses with sensitivity 93.3%/specificity 88% overall and 90%/88% for early-stage MF, where histopathologic distinction from eczema is most difficult. TIAM1 had no diagnostic or prognostic utility, while CADM1 independently associated with worse prognosis in advanced-stage and large cell transformation cases.
What the study was
- Study design
- Retrospective case-control diagnostic study
- Population
- 75 mycosis fungoides, 50 inflammatory dermatitis, 25 controls (skin biopsy specimens)
- Sample size
- 150
- Category
- Diagnostics
- Maturity
- Validated
- Journal
- Journal of Cutaneous Pathology
Why it surfaced
Strong diagnostic performance (93%/88%) for a clinically challenging cutaneous lymphoma where misdiagnosis as eczema/dermatitis is common. CADM1 IHC is a potentially implementable add-on to routine MF workup. Prognostic association with advanced-stage and LCT adds further value.
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