An ultrastructural and immunohistochemical study of pigmented dermatofibrosarcoma protuberans (Bednar tumor). 1999

M Kagoura, and M Toyoda, and H Nagahori, and T Makino, and M Morohashi
Department of Dermatology, Faculty of Medicine, Toyama Medical and Pharmaceutical University, 2630, Sugitani, Toyama 930-0194, Japan. kago@ms.toyama-mpu.ac.jp

A case of Bednar tumor on the right shoulder of a 47-year-old Japanese woman is reported. Histological examination showed plump, spindle cells arranged in a storiform pattern in central areas of the tumor and a diffuse infiltration of the dermal stroma, which was frequently extended into the subcutis at the periphery of the tumor. The tumor contained a fairly identified population of dendritic pigmented cells. Ultrastructurally, most cells had folded nuclei, were spindle-shaped and had long, slender cytoplasmic projections. Dendritic pigmented cells, which were dispersed among neoplastic cells, contained premelanosomes and mature melanosomes. Immunohistochemically, tumor cells exhibited positive reactions for vimentin and CD 34 and failed to show a positive reaction for neuron specific enolase, HMB-45 or S-100 protein. Factor X IIIa was only expressed on tumor cells around melanin-containing cells, which reacted positively with antibodies to S-100 protein and vimentin. These results indicate that the phenotype of tumor cells around melanin-containing cells differs from other tumor cells and that this difference may be caused by the relationship of tumor cells and melanin-containing cells.

UI MeSH Term Description Entries
D007150 Immunohistochemistry Histochemical localization of immunoreactive substances using labeled antibodies as reagents. Immunocytochemistry,Immunogold Techniques,Immunogold-Silver Techniques,Immunohistocytochemistry,Immunolabeling Techniques,Immunogold Technics,Immunogold-Silver Technics,Immunolabeling Technics,Immunogold Silver Technics,Immunogold Silver Techniques,Immunogold Technic,Immunogold Technique,Immunogold-Silver Technic,Immunogold-Silver Technique,Immunolabeling Technic,Immunolabeling Technique,Technic, Immunogold,Technic, Immunogold-Silver,Technic, Immunolabeling,Technics, Immunogold,Technics, Immunogold-Silver,Technics, Immunolabeling,Technique, Immunogold,Technique, Immunogold-Silver,Technique, Immunolabeling,Techniques, Immunogold,Techniques, Immunogold-Silver,Techniques, Immunolabeling
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D003713 Dendritic Cells Specialized cells of the hematopoietic system that have branch-like extensions. They are found throughout the lymphatic system, and in non-lymphoid tissues such as SKIN and the epithelia of the intestinal, respiratory, and reproductive tracts. They trap and process ANTIGENS, and present them to T-CELLS, thereby stimulating CELL-MEDIATED IMMUNITY. They are different from the non-hematopoietic FOLLICULAR DENDRITIC CELLS, which have a similar morphology and immune system function, but with respect to humoral immunity (ANTIBODY PRODUCTION). Dendritic Cells, Interdigitating,Interdigitating Cells,Plasmacytoid Dendritic Cells,Veiled Cells,Dendritic Cells, Interstitial,Dendritic Cells, Plasmacytoid,Interdigitating Dendritic Cells,Interstitial Dendritic Cells,Cell, Dendritic,Cell, Interdigitating,Cell, Interdigitating Dendritic,Cell, Interstitial Dendritic,Cell, Plasmacytoid Dendritic,Cell, Veiled,Cells, Dendritic,Cells, Interdigitating,Cells, Interdigitating Dendritic,Cells, Interstitial Dendritic,Cells, Plasmacytoid Dendritic,Cells, Veiled,Dendritic Cell,Dendritic Cell, Interdigitating,Dendritic Cell, Interstitial,Dendritic Cell, Plasmacytoid,Interdigitating Cell,Interdigitating Dendritic Cell,Interstitial Dendritic Cell,Plasmacytoid Dendritic Cell,Veiled Cell
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012878 Skin Neoplasms Tumors or cancer of the SKIN. Cancer of Skin,Skin Cancer,Cancer of the Skin,Neoplasms, Skin,Cancer, Skin,Cancers, Skin,Neoplasm, Skin,Skin Cancers,Skin Neoplasm
D018223 Dermatofibrosarcoma A sarcoma of the deep layers of the skin. The tumors are locally aggressive tends to recur but rarely metastatic. It can be classified into variants depending on the cell type tumors are derived from or by its characteristics: Pigmented variant from MELANIN-containing DERMAL DENDRITIC CELLS; Myxoid variant, myxoid STROMAL CELLS; Giant cell variant characterized by GIANT CELLS in the tumors; and Fibrosarcomatous variant chracterized by tumor areas histologically indistinguishable from FIBROSARCOMA. Bednar Tumor,Bednar's Tumor,DFSP, Fibrosarcomatous,DFSP, Juvenile,DFSP, Myxoid,DFSP, Pigmented,Darier-Ferrand Tumor,Darier-Hoffmann Tumor,Dermatofibrosarcoma Protuberan,Dermatofibrosarcoma Protuberans, Familial,Dermatofibrosarcoma Protuberans, Fibrosarcomatous,Dermatofibrosarcoma Protuberans, Giant Cell,Dermatofibrosarcoma Protuberans, Myxoid,Dermatofibrosarcoma Protuberans, Pigmented,FS-DFSP,Familial Dermatofibrosarcoma Protuberans,Fibrosarcomatous Dermatofibrosarcoma Protuberans,Giant Cell Fibroblastoma,Giant Dermatofibrosarcoma Protuberans,Metastatic Dermatofibrosarcoma Protuberans,Bednars Tumor,Cell Fibroblastoma, Giant,Cell Fibroblastomas, Giant,DFSPs, Fibrosarcomatous,DFSPs, Juvenile,DFSPs, Myxoid,DFSPs, Pigmented,Darier Ferrand Tumor,Darier Hoffmann Tumor,Dermatofibrosarcoma Protuberan, Familial,Dermatofibrosarcoma Protuberan, Fibrosarcomatous,Dermatofibrosarcoma Protuberan, Giant,Dermatofibrosarcoma Protuberan, Metastatic,Dermatofibrosarcoma Protuberan, Myxoid,Dermatofibrosarcoma Protuberan, Pigmented,Dermatofibrosarcoma Protuberans,Dermatofibrosarcoma Protuberans, Giant,Dermatofibrosarcoma Protuberans, Metastatic,Dermatofibrosarcomas,Familial Dermatofibrosarcoma Protuberan,Fibroblastoma, Giant Cell,Fibroblastomas, Giant Cell,Fibrosarcomatous DFSP,Fibrosarcomatous DFSPs,Fibrosarcomatous Dermatofibrosarcoma Protuberan,Giant Cell Fibroblastomas,Giant Dermatofibrosarcoma Protuberan,Juvenile DFSP,Juvenile DFSPs,Metastatic Dermatofibrosarcoma Protuberan,Myxoid DFSP,Myxoid DFSPs,Myxoid Dermatofibrosarcoma Protuberan,Myxoid Dermatofibrosarcoma Protuberans,Pigmented DFSP,Pigmented DFSPs,Pigmented Dermatofibrosarcoma Protuberan,Pigmented Dermatofibrosarcoma Protuberans,Protuberan, Dermatofibrosarcoma,Protuberan, Familial Dermatofibrosarcoma,Protuberan, Fibrosarcomatous Dermatofibrosarcoma,Protuberan, Giant Dermatofibrosarcoma,Protuberan, Metastatic Dermatofibrosarcoma,Protuberan, Myxoid Dermatofibrosarcoma,Protuberan, Pigmented Dermatofibrosarcoma,Protuberans, Dermatofibrosarcoma,Protuberans, Familial Dermatofibrosarcoma,Protuberans, Fibrosarcomatous Dermatofibrosarcoma,Protuberans, Giant Dermatofibrosarcoma,Protuberans, Metastatic Dermatofibrosarcoma,Protuberans, Myxoid Dermatofibrosarcoma,Protuberans, Pigmented Dermatofibrosarcoma,Tumor, Bednar,Tumor, Bednar's,Tumor, Darier-Ferrand,Tumor, Darier-Hoffmann

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