Ultrastructure in the differential diagnosis of pulmonary histiocytosis and pneumocystosis

J. Gold, P. L'Heureux, L. P. Dehner

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


A child with histiocytosis X initially diagnosed at the age of 4 mth (with death at the age of 22 mth; autopsy) had a series of pulmonary biopsies later in the course of the disease. The specimens were examined by light and electron microscopy. The primary disease was complicated by Pneumocystis carinii pneumonia. This study demonstrates the limitation of light microscopy and the necessity of ultrastructural examination to verify the simultaneous occurrence of an infiltrative disorder such as histiocytosis X in the presence of an infection.

Original languageEnglish
Pages (from-to)243-247
Number of pages5
JournalArchives of Pathology and Laboratory Medicine
Issue number5
StatePublished - Dec 1 1977


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