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[Monoclonal antibodies in pigmented lesions]
L Puig1, A Moreno, J M Moragas
1Servicio de Anatomía Patológica, Hospital de "San Pablo", Barcelona.
Medicina Cutanea Ibero-Latino-Americana
|January 1, 1987
Summary
Murine monoclonal antibodies R-24, L-101, and S-171 aid in diagnosing pigmented lesions. Simultaneous R-24, L-101, and S-171 staining is a rare but specific indicator of melanoma.
Area of Science:
- Immunohistology
- Oncology
- Dermatopathology
Context:
- Accurate diagnosis of pigmented lesions is crucial in dermatology.
- Distinguishing between melanocytic nevi and melanoma can be challenging.
- Monoclonal antibodies offer potential for improved diagnostic accuracy.
Purpose:
- To evaluate the utility of murine monoclonal antibodies R-24, L-101, and S-171 in the immunohistological diagnosis of pigmented lesions.
- To determine the diagnostic value of these antibodies, individually and in combination, for differentiating melanomas from melanocytic nevi.
Summary:
- Murine monoclonal antibody R-24 effectively marks normal and neoplastic melanocytes, aiding in the differential diagnosis of melanoma metastases, though some melanomas are R-24 negative.
- Combined R-24 and L-101 positivity is observed in both melanocytic nevi and melanomas, limiting their differential diagnostic value.
- Simultaneous positive staining for R-24, L-101, and S-171 is infrequent but specific to melanomas.
Impact:
- This study provides insights into the diagnostic potential of specific monoclonal antibodies for pigmented skin lesions.
- Findings may contribute to refining immunohistochemical panels for melanoma diagnosis.
- Further research could validate these antibodies in larger cohorts for clinical application.