A Case of Human Pulmonary Dirofilariasis in a 48-Year-Old Korean Man |
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Authors: | Hyo Jae Kang Young Sik Park Chang-Hoon Lee Sang-Min Lee Jae-Joon Yim Chul-Gyu Yoo Young Whan Kim Sung Koo Han Jong-Yil Chai Jinwoo Lee |
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Affiliation: | 1.Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine and Lung Institute, Seoul National University College of Medicine, Seoul 110-744, Korea.;2.Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 110-799, Korea. |
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Abstract: | Dirofilariasis is a rare disease in humans. We report here a case of a 48-year-old male who was diagnosed with pulmonary dirofilariasis in Korea. On chest radiographs, a coin lesion of 1 cm in diameter was shown. Although it looked like a benign inflammatory nodule, malignancy could not be excluded. So, the nodule was resected by video-assisted thoracic surgery. Pathologically, chronic granulomatous inflammation composed of coagulation necrosis with rim of fibrous tissues and granulations was seen. In the center of the necrotic nodules, a degenerating parasitic organism was found. The parasite had prominent internal cuticular ridges and thick cuticle, a well-developed muscle layer, an intestinal tube, and uterine tubules. The parasite was diagnosed as an immature female worm of Dirofilaria immitis. This is the second reported case of human pulmonary dirofilariasis in Korea. |
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Keywords: | Dirofilaria immitis dirofilariasis pulmonary dirofilariasis |
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