Anisakis parasite

The usual diagnostic methods, both skin tests and specific IgE with whole Anisakis extract, have a good sensitivity but a low specificity to such a degree that in 22% of blood donors specific IgE to the parasite is detected [40] and at least 20% of patients with acute urticaria have positive skin prick tests with whole Anisakis extract [41 ]. As for BAT with whole Anisakis extract, Gonzalez-Munoz et al. [42] report a sensitivity of 96% with a specificity of 96%, which are clearly higher values than those from specific IgE. 

Nieuwenhuizen, N., Lopata, A.L., Jeebhay, M.L.F., Herbert, D.R., Robins, T.G., Brombacher, F. 2006. Exposure to the fish parasite Anisakis causes allergic airway hyperreactivity and dermatitis. Journal of Allergy and Clinical Immunology 117(5) 1098-1105. 

Hamartomas are incidental findings without any morbidity. They cannot be distinguished with any degree of certainty from other polyps. Other polypoid lesions with a firm consistency and without specific endoscopic criteria are adenomyoma, fibroma, neuro-fibroma, eosinophilic granuloma, and those caused by parasites, for instance Anisakis marina, a worm found in raw fish. 

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