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Biomedical subjects

T R Miller

Publications and source records attributed to T R Miller.

257 records · Page 15Linked to original sources

Diagnosis of xanthogranulomatous cholecystitis by fine needle aspiration biopsy. A case report.

Xanthogranulomatous cholecystitis is an uncommon benign thickening of the gallbladder wall characterized histopathologically by extensive histiocytic infiltration. A case is presented in which a 62-year-old woman with clinical cholecystitis was found at surgery to have a markedly thick-walled, adherent gallbladder, raising the differential diagnosis of an inflammatory versus an infiltrating neoplastic process. Intraoperative fine needle aspiration (FNA) biopsy revealed abundant foamy histiocytes ("xanthoma cells"), both dispersed and in clusters associated with capillaries suggestive of organization. Occasional multinucleated giant cells and columnar epithelial cells were also present. The differential diagnosis of histiocytic processes sampled by FNA biopsy is reviewed.

Biopsy, Needle↗

Neuroblastoma diagnosed by fine needle aspiration biopsy.

Small-cell malignancies of childhood are a source of diagnostic difficulty, both in cytology and histology. Four cases of neuroblastoma are presented that were diagnosed by fine needle aspiration cytology. The importance of a complete history, physical examination and laboratory evaluation is stressed. In addition to the usual description of cytologic detail obtained by routine methods, a new method of study is introduced: the potential use of plastic embedding and histochemical studies in small-cell tumors is discussed.

Adolescent↗

Cytologic diagnosis of multiple myeloma and macroglobulinemia in effusions.

The presence of effusion in association with multiple myeloma or macroglobulinemia is an unusual finding which generally occurs late in the course of the disease. Occasionally, cytoligic detection is a diagnostic problem. In both conditions, the fluid is characrerized by a high specific gravity and high protein content. In myeloma, plasma cells at varying stages of differentiation are present, while in macroglobulinemia atypical lymphocytes and plasma cells resembling those found in the blood and bone marrow are seen. Generally, the diagnosis can be readily made on the basis of clinical features, characteristics of the fluid and cytologic findings. In difficult cases, additional procedures helpful in establishing a definite diagnosis include methyl green pyronine stain, fluid electrophoresis and electron microscopy.

Adult↗