• Zhao-lin Xu, Drew Bethune, Daria Manos, Annette Foyle, Harry Henteleff, Michael Johnston, and Yannick Cartier.
• Department of Pathology, Queen Elizabeth II Health Sciences Centre and Dalhousie University, Halifax, Nova Scotia, Canada B3H 1V8. zxu3@dal.ca
• Beijing Da Xue Xue Bao. 2009 Aug 18; 41 (4): 463-8.

ObjectiveTo present clinical and pathologic features of pulmonary hyalnizing granuloma through analyzing three cases found in our institution and reviewing cases reported in the English language literature.Methods And ResultsThree cases of pulmonary hyalnizing granuloma identified at our institution during the past ten years were reviewed. In the first case, the patient presented with concurrent pulmonary hyalinizing granuloma and histoplasmosis. In the second case, the patient presented with a 5.5 cm lung mass and a separate smaller lesion radiologically resembling bronchogenic carcinoma. There was very prominent polyclonal lymphocytic proliferation at the periphery especially of the smaller lesion likely representing an early stage of the disease process. In the third case, the patient presented with multiple subpleural plaque-like lesions in addition to nodular lesions of the lung. All cases also demonstrated various degrees of lymphocytic infiltration within the lesions. The English literature has been reviewed through searching the PubMed.ConclusionSince patients with pulmonary hyalinizing granuloma demonstrated a spectrum of clinical presentations, radiologic changes and histologic features with a variety of associated clinical disorders, pulmonary hyalnizing granuloma is more in keeping with a clinicopathologic entity rather than a specific pathologic disease.

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