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Cystic echinococcosis is a widespread zoonotic parasitic disease especially in Tunisia which is one of the most endemic countries in the Mediterranean area. The etiological agent, Echinococcus granulosus sensu lato, implies dogs and other canids as definitive hosts and different herbivore species as intermediate hosts. Human contamination occurs during the consumption of parasite eggs passed in the environment through canid feces. Hydatid cysts coming from a child operated for multiple echinococcosis were collected and analyzed in order to genotype and to obtain some epidemiological molecular information. Three targets, ribosomal DNA ITS1 fragment, NADH dehydrogenase subunit 1 (nad1), and mitochondrial cytochrome c oxydase subunit 1 (CO1) genes, were amplified and analyzed by RFLP and sequencing approach. This study presents the first worldwide report in human of a simultaneous infection with Echinococcus granulosus sensu stricto (genotype G1) and Echinococcus canadensis (genotype G6) species. This is also the first report of the presence of E. canadensis in the Tunisian population which argues in favor of a greater importance of this species in human infestation in Tunisia than previously believed.

Congenital esophageal web is a rare disorder that presents a diagnostic and management challenge. In a female infant born at 31 weeks of gestation, significant secretions and respiratory distress were noted at birth. Chest X-ray demonstrated the nasogastric tube in the esogastric junction with no distal bowel gas. Esophagogram showed a congenital web near the esogastric junction. An endoscopic examination under general anesthesia showed a complete, thick membrane on the distal esophageal lumen. Endoscopic incision and cauterization of the web through the midline were performed, improving the clinical symptoms and esophageal stenosis.

Prompt preoperative diagnosis of duodenal duplication cyst is uncommon owing to its extreme rarity. The ideal treatment of intestinal duplication cyst is complete surgical excision, though in few cases, due to the proximity to the bilio-pancreatic duct, the complete excision is not possible. We herein present an infant presenting with bilious vomiting starting few days after birth. Ultrasonography and CT scan provided the diagnosis of the duplication cyst in relation to duodenum. A successful surgical management by a subtotal excision was done. Although duodenal duplication is seldom seen, it should be considered in differential diagnoses of upper gastrointestinal tract (GIT) occlusion.

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