Adrenal Schwannoma with Apparent Uptake of Immunoglobulins |
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Authors: | Yvan C. Bedard Eva Horvath Kalman Kovacs |
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Affiliation: | a Departments of Pathology, Mount Sinai and St. Michael's Hospitals, University of Toronto, Toronto, Ontario, Canada |
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Abstract: | Schwannoma, a rare tumor of the adrenal gland, was an incidental finding in a 63-year-old woman who had no endocrine symptoms. In addition to the usual light and electron microscopic and immunohistochemical features of a schwannoma, the tumor contained large granular cells and a stroma rich in lymphocytes and plasma cells. The tumor cells appeared on ultrastructural examination to incorporate proteinaceous material by endocytosis into large lysosomal bodies and on immunocytologic studies; the presence of immunoglobulins was noted within the cytoplasm. The apparent massive uptake of immunoglobulins by tumor cells suggests a direct interaction between host and the tumor. |
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Keywords: | Adrenal electron microscopy lysosomes neoplasms schwannoma |
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