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  • Title: Fine needle aspiration cytology of renal infarcts. Cytomorphologic findings and potential diagnostic pitfalls in two cases.
    Author: Silverman JF, Gurley AM, Harris JP, Weaver MD, Bernacki EG.
    Journal: Acta Cytol; 1991; 35(6):736-41. PubMed ID: 1950326.
    Abstract:
    The fine needle aspiration (FNA) cytologic features of two cases of renal infarction are presented. Both patients did not have a classic clinical history for infarction, and the radiologic findings were suggestive of neoplasia. In one of our cases, necrotic glomeruli and tubules were present, which suggested the correct diagnosis of renal infarction and permitted appropriate early treatment. In the other case, groups of atypical renal tubular cells undergoing repair secondary to the infarction was misinterpreted as renal cell carcinoma. This case illustrates that renal infarction, like pulmonary infarction, can be a potential pitfall for a false-positive cytologic diagnosis of malignancy in FNA biopsy. A conservative approach is warranted when there is scanty cellularity and atypical cells having features of a repairlike reaction are present.
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