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Biomedical subjects

B B Fernandez

Publications and source records attributed to B B Fernandez.

28 records · Page 2Linked to original sources
PubMed1976

Multiple diffuse fibrosarcoma of bone.

Light and electron microscopic observations of a case of multiple diffuse fibrosarcoma of bone are presented. Two cases of diffuse fibrosarcoma of bone have been previously reported. Clinically the tumor presented as multiple osteolytic lesions involving the pelvis bone, vertebral bodies and skull with the radiologic appearance of a multiple plasma cell myeloma. Histologically the tumor was a spindle-cell fibrosarcoma. At the ultrastructural level the tumor cells represent fibroblasts separated by a scanty amount of collagen fibers. Electron microscopic findings substantiate the fibroblastic origin of multiple diffuse fibrosarcoma of bone.

Bone Neoplasms↗
PubMed1976

Metastatic cystosarcoma phyllodes: a light and electron microscopic study.

Two cases of metastatic cystosarcoma phyllodes, one in lung and the other in axillary lymph nodes, were studied with the light and the electron microscopes. The malignant element of these tumors appears to be a poorly differentiated mesenchymal cell. No evidence supporting the presence of epithelial cells was found. The tumor metastatic to the axilla exhibited intracellular virus-like particles similar to those described in adenocarcinoma of breast and other sarcomas.

Cell Nucleolus↗
PubMed1976

Poorly differentiated synovial sarcoma. A light and electron microscopic study.

Few studies of the ultrastructural features of synovial sarcoma have appeared in the literature. The case under study represented a poorly differentiated synovial sarcoma with a predominant fibrosarcomatous component and a few areas with epithelioid and pseudoacinar patterns. Ultrastructurally, the cellular elements of the varied histologic patterns were similar. Basement membranes and desmosomes were absent, and the cell surfaces facing the acinar lumen exhibited multiple microvilli. It appears from a comparison of our studies with the previous reports that the fine structure of this tumor varies according to the degree of histologic differentiation.

Adult↗
PubMed1975

Chemodectoma of the vagus nerve. Report of a case with ultrastructural study.

Light and electron microscopic studies of a chemodectoma of the vagus nerve are presented. Forty-four cases of vagal chemodectoma have been reported to date, but no electronmicroscopic studies have been published. The ultramicroscopic studies showed the presence of clear and dark cells and membrane-bound neurosecretory granules, and the absence of sustentacular cells and nerve endings. Similar findings have been reported in cases of carotid body and glomus jugulare tumors.

Cell Membrane↗
PubMedDate not supplied

Mucus-secreting carcinoid tumor in a colonic diverticulum: report of a case.

A mucus-secreting carcinoid tumor arising in a colonic (rectosigmoid) diverticulum is presented. Carcinoid tumors in colonic diverticula have not been previously reported. The presence of mucin and argentaffin granules in the same tumor cell is illustrated. The recognition of mucus-secreting carcinoid tumors is emphasized in order to avoid overtreatment of small colonic carcinoid tumors by extensive surgical procedures.

Adenocarcinoma, Mucinous↗