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Dermatology Online Journal

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Lichenoid sialadenitis in chronic graft versus host disease


Chronic graft versus host disease (cGVHD) remains the principal long-term life-threatening complication in hematopoietic stem cell transplant recipients. We present a case of lichenoid sialadenitis in a 23-year-old-man with systemic cGVHD. The histological examination showed a lymphocytic inflammatory infiltrate adjacent to the salivary gland duct, similar to the histological aspects described in the typical manifestations of oral lichen planus and lichen planopilaris. This consists of a band-like inflammatory infiltrate not only targeting the cutaneous epithelium but also adnexal structures, such as hair follicles and salivary gland ducts. It is well described that the oral lesions in cGVHD share most of morphological and clinical manifestations with those described in oral lichen planus. The mechanisms of lichenoid salivary gland ducts destruction might be similar, although xerostomy appears to be specific to cGVHD, which may represent a clinical sign of massive salivary gland impairment related to ductal lichenoid destruction in patients with cGVHD.

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