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March 1969

Pulmonary "Coin" Lesion Due to Dirofilaria immitis: Report of Two Cases

Author Affiliations

Wilmington, NC
From the departments of pathology (Dr. Lewis) and surgery (Drs. Tinsley and Williams), New Hanover Memorial Hospital, and the Department of Surgery, Cape Fear Memorial Hospital (Dr. Williams), Wilmington, NC 28401.

Arch Surg. 1969;98(3):388-390. doi:10.1001/archsurg.1969.01340090164035

The assessment of a pulmonary "coin" lesion continues to be difficult, despite the diagnostic armamentarium now available; and thoracotomy is frequently required to determine the nature of the lesion.

Faust et al1 reported the first case of a dog heart-worm infestation in a human in the United States. This particular worm was identified as a Dirofilaria louisianensis, was found in the inferior vena cava, and did not appear to be causing symptoms. Osborne et al2 reported a solitary pulmonary nodule due to Ascaris lumbricoides. In the report, it was noted that one parasitologist suggested that this parasite might be a Dirofilaria. Dashiell3 reported a case of Dirofilaria in the lung of a 57-year-old white woman. Goodman and Gore4 reported a pulmonary infarct secondary to D immitis. Harrison and Thompson5 reported two cases of pulmonary dirofilariasis, one in a 53-year-old white woman, the other in a