Pulmonary hyalinosis in captive sugar gliders (Petaurus breviceps)

Set A. Sokol, Dalen W. Agnew, Anne Lewis, Teresa L. Southard, Andrew D. Miller

    Research output: Contribution to journalArticle


    Pulmonary hyalinosis is an idiopathic, typically incidental lesion of old dogs, characterized by multifocal aggregates of epithelioid and multinucleate macrophages that surround periodic acid–Schiff (PAS)-positive hyaline material in airways. Lung lesions resembling pulmonary hyalinosis were observed in 6 captive adult sugar gliders (Petaurus breviceps; 5 females and 1 male) in a retrospective review of 18 autopsied animals. Clinical signs for 3 of the sugar gliders included lethargy, tachypnea, and dyspnea. At autopsy, 5 of 6 animals had comorbid lesions that were the primary cause of death. Gross pulmonary lesions were characterized by mildly firm, discolored, vaguely nodular areas of parenchyma. Histologic examination of the lung revealed granulomatous inflammation with intracellular and extracellular amphophilic hyaline bodies within alveoli and airways. Hyaline bodies were positive for PAS and oil red O staining, blue via crystal violet staining, and displayed birefringence under polarized light, similar to findings in dogs with pulmonary hyalinosis.

    Original languageEnglish (US)
    Pages (from-to)691-695
    Number of pages5
    JournalJournal of Veterinary Diagnostic Investigation
    Issue number5
    Publication statusPublished - Sep 1 2017



    • alveolar proteinosis
    • Alveolar-filling disorder
    • Petaurus breviceps
    • pulmonary hyalinosis
    • sugar gliders

    ASJC Scopus subject areas

    • veterinary(all)

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