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Katayama syndrome disguised as eosinophilic asthma with acute systemic symptoms and pulmonary nodules. | LitMetric

Katayama syndrome disguised as eosinophilic asthma with acute systemic symptoms and pulmonary nodules.

Respir Med Case Rep

Respiratory Division, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel (VUB), Laarbeeklaan 101, 1090, Jette, Belgium.

Published: May 2024

Background: Katayama syndrome is an acute manifestation of schistosomiasis, a parasitic infection that manifests itself through a hypersensitivity reaction to migrating larvae and early egg deposition. Left undiagnosed and untreated, acute schistosomiasis can develop into chronic schistosomiasis which can lead to debilitating morbidity such as pulmonary hypertension. This case highlights that Katayama syndrome can also been seen in regions where the parasite is not endemic, as it occurs in travelers returning from endemic regions or in immigrants.

Case Presentation: We describe the case of a 26-year-old asthmatic male, who presented with systemic symptoms including fever, myalgia, night sweats as well as gastro-intestinal and pulmonary complaints since five days. At presentation, there was a raised blood eosinophil count and nodular lesions were seen on computed tomography. After considering diagnoses such as tuberculosis, vasculitis and hypereosinophilic syndrome, it was repeated history taking that revealed that the patient had suffered from swimmer's itch during a stay in Guinea. A stool sample showed microscopic presence of Schistosoma mansoni eggs, confirming the diagnosis of Katayama syndrome. The patient was treated with tapered corticosteroids to suppress the hypersensitivity reaction and praziquantel was added to cure the parasitic infection. This led to a complete resolution of the patients' symptoms and radiological abnormalities. Negative stool samples confirmed the eradication of the schistosomes.

Conclusions: Swimmer's itch and Katayama syndrome are manifestations of acute schistosomiasis. It is important to recognize the syndrome, because early diagnosis and adequate treatment can prevent chronic disease and significant morbidity.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11087229PMC
http://dx.doi.org/10.1016/j.rmcr.2024.102032DOI Listing

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