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Volume 32, Number 7—July 2026

Research Letter

Human Pulmonary Dirofilariasis,
North Queensland, Australia, 20231

Kimberley Murray, Emily Grahn, Andrew Stacey, Carly Hughes, Harsha Sheorey, Constantin Constantinoiu, Leslie Kuma, and Richard S. BradburyComments to Author 
Author affiliation: Townsville University Hospital, Townsville, Queensland, Australia (K. Murray, A. Stacey, C. Hughes, L. Kuma); James Cook University, Townsville (E. Grahn, C. Hughes, C. Constantinoiu, R.S. Bradbury); St Vincent’s Hospital Melbourne, Melbourne, Victoria, Australia (H. Sheorey); Royal Melbourne Hospital, Melbourne (H. Sheorey).

Main Article

Figure 1

Dirofilaria organisms recovered from a patient with human pulmonary dirofilariasis in 
North Queensland, Australia, 2023. A) Degenerate D. immitis nematode (black arrow) within a necrotic human lung granuloma and adjacent parenchyma. Original magnification ×2. B, C) Deeper cuts of the same region at 100× magnification. D) Cross-section of 2 regions of the coiled worm at 400× magnification. Hematoxylin and eosin stains.

Figure 1. Dirofilaria organisms recovered from a patient with human pulmonary dirofilariasis in 
North Queensland, Australia, 2023. A) Degenerate D. immitis nematode (black arrow) within a necrotic human lung granuloma and adjacent parenchyma. Original magnification ×2. B, C) Deeper cuts of the same region at 100× magnification. D) Cross-section of 2 regions of the coiled worm at 400× magnification. Hematoxylin and eosin stains.

Main Article

1This case was presented at the 2024 Royal College of Pathologists of Australasia Pathology Update Conference; Adelaide, Australia; 2024 Mar 1–3.

Page created: May 28, 2026
Page updated: June 25, 2026
Page reviewed: June 25, 2026
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