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Related Experiment Videos

Pulmonary dirofilariasis: computed tomography findings and correlation with pathologic features.

Yasuji Oshiro1, Sadayuki Murayama, Utako Sunagawa

  • 1Department of Radiology, Okinawa National Hospital, National Hospital Organization, Okinawa, Japan.

Journal of Computer Assisted Tomography
|November 13, 2004
PubMed
Summary

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Pulmonary dirofilariasis nodules, a rare parasitic infection, present specific computed tomography (CT) features. Awareness of these CT and pathologic findings aids in differentiating these benign nodules from malignant lung lesions.

Area of Science:

  • Medical Imaging
  • Parasitology
  • Pulmonary Pathology

Background:

  • Pulmonary dirofilariasis is a rare parasitic infection caused by Dirofilaria species.
  • Pulmonary nodules are a common finding, but parasitic causes are less frequent.
  • Accurate differentiation from malignancy is crucial for patient management.

Purpose of the Study:

  • To describe the computed tomography (CT) and pathologic features of pulmonary dirofilariasis nodules.
  • To enhance the understanding of imaging characteristics for this rare condition.

Main Methods:

  • Retrospective analysis of CT scans from 4 patients with pathologically confirmed pulmonary dirofilariasis.
  • Comparison of imaging findings with histopathologic characteristics.

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Main Results:

  • Five nodules were identified in 4 patients, predominantly in the right lower lobe and attached to the pleura.
  • Nodules were round/oval (11-22 mm), with smooth margins, and connected to vascular structures.
  • Contrast-enhanced CT showed homogeneous low-attenuation areas corresponding to coagulative necrosis.

Conclusions:

  • CT findings of pulmonary dirofilariasis nodules are nonspecific.
  • Awareness of contrast-enhanced CT features and pathologic appearance can help differentiate these benign nodules from malignant lesions.