Toxocariasis is a parasitic disease caused by the larval stage of Toxocara cati and T. canis, which live in the intestinal system of cats (T. cati) and dogs (T. canis). Infective eggs can enter the gastrointestinal system by the oral route via foods contaminated with feces of dogs or cats or via dirty contaminated hands. The larvae penetrate the small intestine and migrate to visceral organs by systemic circulation. Hypereosinophilia is a common finding in the tissue invasion of parasites. Serological methods are the principle diagnostic methods for toxocariasis. In this study, we reported a toxocariasis patient presented with hypereosinophilia, hepatomegaly, and intestinal involvement. Computed tomography showed diffuse thickening of the ileal bowel loop walls around the umbilicus. Endoscopic ultrasonography revealed an enlarged periduodenal lymph node. Symptoms improved with albendazole treatment with a subsequent flare. Keywords: Hypereosinophilia, toxocariasis, atypical zoonosis ÖZ Toksokariazis, kedi ve köpeklerin barsaklarında yaşayan Toxocara canis ve Toxocara cati'nin neden olduğu parazitik bir hastalıktır. Enfektif yumurtalar kedi-köpek dışkısıyla kontamine olmuş besinlerle veya iyi yıkanmamış kontamine ellerle oral yoldan gastointestinal sisteme girebilir. Barsaklardan penetre olan larvalar iç organlara yerleşebilirler. Parazitlerin dokuya invazyonu sonucu hipereozinofili sık görülen bir bulgudur. Serolojik testler toksokaryozis tanısı konulmasındaki temel tanı yöntemidir. Biz bu olguda hipereozinofili, hepatomegali, ve barsak tutulumu ile prezente olan bir toksokoriazis vakasını bildirdik. Bilgisayarlı tomografide göbek etrafındaki ileal barsak anslarında yaygın duvar kalınlaşması görüldü. Endoskopik ultrasonografide büyümüş periduodenal lenf nodu saptandı. Semptomlar albendazol tedavisi aile düzelirken takip eden bir alevlenme görüldü.

Hydatid cyst disease is an oral transmitted parasitosis caused by the larval form of the Echinococcus granulosus tapeworm that penetrates the intestinal mucosa and reaches the internal organs via the blood and lymphatic stream. Hydatid cyst disease is an important health problem, especially in developing countries, such as Turkey. Renal hydatid cyst is extremely rare, and kidney involvement is seen in only 2% of all cases. In this study, we present two patients with renal hydatid cyst. Hydatid cyst was not suspected before pathological diagnosis in both patients. At first, the patients were suspected of having malignancy, and the treatment modality was made accordingly. When the pathology results revealed hydatid cyst, the treatment of the patients was modified. Renal hydatid disease should be kept in mind in the differential diagnosis of patients presenting with renal cyst in Turkey.