Biomedical subjects
Publications and source records attributed to N Litton.
An unusual combination of renal oncocytoma with multiple myeloma in a 69-year-old woman is reported. The possible hematogenous spread and/or direct extension of malignant plasma cells to the kidney tumor is discussed.
Talc in the liver is highly suggestive of intravenous drug abuse. We report three patients in whom finding talc or talc granuloma on liver biopsy led to the diagnosis of unsuspected i.v. drug abuse. There follows a discussion of the pathogenesis, laboratory and clinical features, and liver pathology of talc liver.
Light microscopy of sections from the paraaortic and pelvic lymph nodes of a patient revealed micrometastases with sinus pattern. The diagnosis of metastatic rhabdomyosarcoma was confirmed ultrastructurally by demonstration of actin filaments and Z bands. To our knowledge occult metastases of rhabdomyosarcoma with purely sinus pattern have not been reported previously and diagnosis might be difficult to establish clinically or pathologically. However, recognition of the lymph node involvement changes the clinical staging and therapeutic regimen of this disease. Therefore, rhabdomyosarcoma should be included in the differential diagnosis of lymphadenopathies with sinus pattern. The disorders causing sinus pattern in lymph nodes are briefly reviewed.
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