Strongyloides stercoralis is a nematode capable of penetrating the human skin through direct contact with contaminated soil. It migrates to the lung and the gastrointestinal tract, affecting mostly the small intestine, particularly the duodenum and upper jejunum, and rarely the stomach. It is endemic to tropical and subtropical regions and occurs sporadically in temperate areas such as southern Europe. From 1910 up to the 1980s, strongyloidiasis was endemic in Portugal, particularly in the central region, but since then only some sporadic cases have been published in the medical literature [1].
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