T. F. C. S. WARNER, M.D.
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To the editor: Varkey and Kutty (1) suggest that the finding of mineral oil in a scalene node biopsy may aid in the diagnosis of lipoid pneumonia. Although aspirated mineral oil may well reach these lymph nodes, its mere demonstration does not prove entry via the respiratory tract. Oil-laden macrophages are commonly found in lymph nodes, spleen, and less commonly in liver and bone marrow of adults. Kelsall and Blackwell (2) found lipophage clusters in scalene lymph nodes in 12 of 279 patients at autopsy. The association of black pigment with oil vacuoles does not appear to be helpful either.
WARNER TFCS. Lipoid Granulomata in Scalene Node. Ann Intern Med. ;84:755. doi: 10.7326/0003-4819-84-6-755_1
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Published: Ann Intern Med. 1976;84(6):755.
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