Abstract
A case of metastatic balloon cell malignant melanoma (BCMM) is presented. The balloon melanoma cells (BMC) were absent in the shave biopsy of the primary lesion and present as a minor component in the wide and deep excision. A subsequent right neck lymph node metastasis showed complete replacement of the lymph node by large, foamy cells. Though the tumor was amelanocytic and Fontana-Masson stain failed to reveal melanin, it stained positively for S-100, HMB-45, and Melan-A. Ultrastructurally, the foamy cells were characterized by cytoplasmic vacuolization and a lack of melanosomes. The differential diagnosis of metastatic balloon cell malignant melanoma is broad, and clinicopathologic correlation may play a critical role in achieving the correct diagnosis.
Original language | English (US) |
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Pages (from-to) | 315-321 |
Number of pages | 7 |
Journal | International Journal of Clinical and Experimental Pathology |
Volume | 4 |
Issue number | 3 |
State | Published - 2011 |
Keywords
- Balloon cell
- Clear cell tumors
- Malignant
- Melanoma
ASJC Scopus subject areas
- Pathology and Forensic Medicine
- Histology