which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Due to a layout error, in the title Unites must be canged on United. At the first row of the abstract histiocytic lymphadenitis must be canged on histiocytic necrotizing lymphadenitis.

conclusions our study is the first to investigate patients with lch and its possible association with hhv-6 in iran. considering the p level of 0.11, which is statistically insignificant, our findings fail to support the hypothesis of a possible role for hhv-6 in the pathogenesis of lch. these results are in concordance with previous investigations showing negative results. results there was no...

Rosai-Dorfman disease (RDD) is a rare non-Langerhans histiocytic disorder primarily involving lymph nodes. Extranodal RDD has heterogenous presentation, and isolated pulmonary involvement rare. We report the only case of presenting as an pleural mass. Our patient was 55-year-old female with multiple comorbidities who presented chest pain. Imaging revealed enlarging pleural-based lesion. She und...

introduction: kikuchi-fujimoto disease or histocytic necrotizing lymphadenitis is a rare, benign, self-limited condition characterized by constitutional symptoms, lymphadenopathy, and skin lesions and often affects young adult females.the etiology is unknown although viruses and autoimmune mechanisms has been suggested. diagnosis is fundamentally based on the affected lymph node biopsy.the pati...

We report 3 cases of a previously uncharacterized form of histiocytosis presenting in early infancy and showing ALK immunoreactivity. The patients presented with pallor, massive hepatosplenomegaly, anemia, and thrombocytopenia. Liver biopsy showed infiltration of the sinusoids by large histiocytes with markedly folded nuclei, fine chromatin, small nucleoli, and voluminous lightly eosinophilic c...

Kikuchi-Fujimoto Disease (KFD) is a self-limiting, necrotizing, histiocytic lymphadenitis (NHL) of unknown etiopathogenesis. So far in Nepal not a single case of this disease in the cervical region leading to progressive inspiratory stridor has been reported till date. Here a case of 26 years old Nepalese house wife suffering from this disease, which is histopathologically proved as KFD with co...