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Gastrointestinal lesion in adult-onset Langerhans cell histiocytosis
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Gastrointestinal lesion in adult-onset Langerhans cell histiocytosis
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Gastrointestinal lesion in adult-onset Langerhans cell histiocytosis
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Journal Article
Gastrointestinal lesion in adult-onset Langerhans cell histiocytosis
2020
Overview
BackgroundLangerhans cell histiocytosis (LCH) is a rare disease primarily occurring in children, and commonly involves the bone and skin; gastrointestinal tract involvement is notably rare. The incidence and significance of gastrointestinal lesions in adult LCH are unclear; thus, we aimed to investigate adult Japanese cases of LCH and clarify the features of gastrointestinal involvement.MethodsWe gathered clinical information on 43 Japanese cases of adult LCH and analyzed patient backgrounds, affected organs, features of the gastrointestinal lesions, and the clinical courses.ResultsThirteen patients underwent endoscopic examinations: an upper gastrointestinal endoscopy alone in 5, lower gastrointestinal endoscopy alone in 3, and both in 5 patients. A gastric lesion (one case), colonic lesion (one case), and both gastric and rectal lesions (one case) were detected. The three cases of gastrointestinal involvement also exhibited nongastrointestinal multisystem LCH lesions and showed no gastrointestinal symptoms or increased uptake on positron emission tomography. Endoscopy revealed small erosions without specific features; histological examinations were required for diagnosis. These three cases were treated with chemotherapy, comprising vinblastine/prednisolone, methotrexate, and daily 6-mercaptopurine, for 36 weeks; in two cases, the clinical condition remained stable for several years post-treatment. One case showed recurrence 1 year 7 months after treatment, and chemotherapy was re-administered. No case with single-system disease exhibited gastrointestinal involvement.ConclusionsAlthough gastrointestinal LCH lesions are rare, they were more common than expected in our cases of multisystem LCH. However, these lesions were relatively small and did not affect the patients’ clinical courses.
Publisher
Springer Nature B.V
