accidental infection with animal filarial worms in humans is a dilemma for clinicians and parasitolo­gists throughout the world. to date a variety of such rare parasitoses have been reported mostly in tropics and subtropics. human dirofilariasis is among those unusual zoonotic infections that occasionally have been observed in the eye and in subcutaneous areas exhibiting with nodule for­mation....

Pulmonary dirofilariasis (PD), caused by Dirofilaria immitis (D. immitis), the dog heartworm, is not common in humans, though we recently encountered 4 cases. Chest X-ray images from annual health examinations showed a single spherical nodule in the inferior or middle portion of the right lung in each patient. None of the patients showed any clinical symptoms and had no contact with dogs. Hemat...

The heartworm Dirofilaria immitis is the causative agent of cardiopulmonary dirofilariosis in dogs and cats, and also infects humans. However, there has been no study on dirofilariasis in dogs in central China. From March 2015 to February 2016, sera from 1176 randomly selected household dogs from Henan province, central China were examined for D. immitis antigen using the Canine Heartworm Antig...

BACKGROUND Solitary lung nodules in humans caused by the dog parasite Dirofilaria immitis are steadily increasing in number. The organisms can be easily missed in haematoxylin and eosin stained tissue when they are degenerated and pale staining. METHODS The value of Tinopal CBS-X (TCBS-X) and Calcofluor white (CFW), two rapid, inexpensive, simple non-specific fluorescent whitening stains, wer...

A 55-year-old Polish male presented with discomfort, redness, itching, and swelling in the left eye that had begun three days before seeking medical help. Slit-lamp examination revealed an actively moving subconjunctival worm located inferotemporally ( Figure 1 ). A complete, live, moving nematode was removed under local anesthesia, and it was first stored in physiological saline for microscopi...

A 22-year-old Caucasian man with a history of metastatic chondroblastic osteosarcoma was wedge resected via open thoracotomy after surveillance follow-up in 2009 revealed suspicious multifocal bipulmonary lesions on a CTscan (figure 1). Five years previously, neoadjuvant and adjuvant chemotherapy according to the COSS 96 protocol had been given. Surveillance follow-up in 2009 showed new multifo...

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A survey on the prevalence of canine heartworm was conducted in 1, 495 dogs from Maranhão Island, State of Maranhão, Northeastern Brazil, from 1991 to 1994, by testing for microfilariae in blood. Of the total, 1,358 (12.8% of which were infected) were dogs with no known history; they included 1,265 homeless animals (10.3% with microfilariae) and 93 kept by owners at the time the survey was cond...