Ytk

FIGURE 9-17 (see Color Plate)

FIGURE 9-17 (see Color Plate)

Fine-needle aspirate of acute allergic interstitial nephritis. A, The aspirate contains numerous lymphocytes, occasional activated lymphocytes, and eosinophils without fully transformed lymphocytes, corresponding to the inflammatory component within the tubuloint-erstitium observed on routine renal biopsy. Monocytes often are present (May-Grunwald Giemsa, original magnification X 80). B, Higher magnification showing the typical infiltrating cells, including a monocyte, activated lymphocyte, and an eosinophil. A neutrophil is present, likely owing to blood contamination (May-Grunwald Giemsa, original magnification X 160).

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