Multicentric Castleman's Disease (MCD) is a rare and poorly understood disorder that straddles the intersections of hematology, oncology, rheumatology, and virology and can be fatal if improperly treated. The etiology of HHV8 negative disease is unknown and only isolated cases of associations with infectious agents have been reported in literature. However the co-occurrence of Mycobacterium cos...

We present a case of multicentric infantile myofibromatosis in a 3-month-old male infant who had multiple papular lesions on his extremities and trunk and a slowly growing and bulging mass on his left occipital area since birth. His general physical condition was good and psychomotor development was normal. The diagnosis was established by histopathological and immunohistochemical studies along...

Two cases of angiofollicular lymph node hyperplasia are described, one of the solitary plasma cell type the other of the multicentric hyaline vascular type. Both cases illustrate the wide ranging clinical and pathological findings associated with this condition but both also have unusual features. The solitary plasma cell lesion had an exceptional 32 year clinical history and was associated wit...

Multicentric reticulohistiocytosis is a rare multisystem disorder of unknown etiology that is characterized by erosive polyarthritis and papulonodular lesions on the skin, mucous membranes, and internal organs. We report the case of a 54-year-old female who was misdiagnosed as having rheumatoid arthritis and underwent numerous joint replacement surgeries for progressively destructive arthritis ...

Fig. 1. (A) Left parotid swelling measuring 5.8×4.2×4 cm at initial diagnosis. (B) Complete clinical response after radiotherapy. 4. Ma Y, Li F, Chen L. Widespread hypermetabolic lesions due to multicentric form of Castleman disease as the cause of fever of unknown origin revealed by FDG PET/CT. Clin Nucl Med 2013;38:835-7. 5. Rossotti R, Moioli C, Schiantarelli C, Orcese C, Puoti M. FDG-PET im...

Castleman disease is a rare lymphoproliferative disorder, which presents in a unicentric or multicentric fashion. Multicentric Castleman disease (MCD) is associated with significant systemic symptoms, in part related to the underlying role of interleukin-6 in disease pathogenesis. Treatment for MCD has not been well established and prognosis has historically been poor. We present a case of seve...