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  • Title: [Painless orbital swelling after sojourn in tropics. Cysticercosis and other parasitic eye diseases].
    Author: Wabbels B, Kruse F, Helmke B, Rohrschneider K, Völcker HE.
    Journal: Klin Monbl Augenheilkd; 2000 Aug; 217(2):109-13. PubMed ID: 11022665.
    Abstract:
    BACKGROUND: The differential diagnosis of painless orbital swelling is complex and based on radiological and physical examination as well as laboratory tests. Due to increasing tourism to exotic countries a thorough history is important to observe diseases which are rare in industrialised countries but frequent in developing countries. PATIENT: A 30-year-old man complained about a painless orbital swelling in the absence of general symptoms. Orbital examination revealed a normal globe. MRI scan and B-scan ultrasounds showed an orbital cyst with a diameter of 1 cm. The patient's history disclosed lengthy travel to India as well as South East Asia. RESULTS: Histopathological examinations following excision of a whitish intraorbital mass showed a cream-white, thin walled cyst with a single central invaginated scolex with suckers and hooklets. This finding is characteristic for cysticercosis. CONCLUSIONS: Cysticercus cellulose is the larval stage of the pork tapeworm Taenia solium. It is transmitted by ingestion of contaminated food or water. Ocular affection is reported concerning the vitreous or subretinal localisation, less often in the anterior segment, subconjunctiva or orbita. Especially after trips to tropical regions, parasitic diseases should be kept in mind when dealing with unusual eye symptoms. Besides cysticercosis there are e.g. echinococcosis, onchocercosis (river blindness) and infections with toxocara or Loa loa.
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