Pretreatment lymph nodes, bone marrow, and blood were examined in 176 cases of non-Hodgkin's lymphoma. By the criteria of the Lukes and Collins functional--morphological classification, 158 (90%) were B-cell lymphomas and 17 (10%) were T-cell lymphomas. Bone marrow involvement was present in 53% of cases: 51% of B-cell types and 65% of T-cell types. Marrow involvement was most frequent in small...

Introduction Primary bone lymphoma (PBL) is a rare disease that was first described by Oberling in 1928.1 The vast majority of PBL cases are non-Hodgkin lymphoma (NHL), whereas primary Hodgkin lymphoma (HL) of bone is extremely rare. PBL constitutes 7% of all malignant bone tumors, 4-5% of all extranodal NHL, and less than 1% of all malignant lymphomas.2-5 Patients with primary NHL of bone comm...

in this session, we will discuss 7 cases in pediatric musculoskeletal field. these cases will include different aspects of bone and msk disorders in pediatrics such as bone tumors (benign and malignant), bone involvement in metabolic and hematologic disorders, infectious diseases and soft tissue vascular lesions. during this session, we will ask some volunteered radiology residents to explain t...

background: langerhans' cell histiocytosis (lch) is a reactive proliferative disease of unknown pathogenesis characterized by proliferation of langerhans cells. involvement of bone marrow (bm), liver and lung are related to high risk factors and poor survival. the aim of this report is to highlight the clinical and haematological findings of 5 cases of lch with bm infiltration which may help to...

sarcoidosis is a systemic disease that is characterized with noncaseating granulomatous nodules which present in multiple organs specially lungs (90%) . incidence of masses due to sarcoidosis in upper extremity is low and most cases present in association with involvement of pulmonary hilary lymph nodes. in this article we present a rare case of sarcoidosis which presented as a single soft tiss...

Aneurysmal bone cyst are benign rapidly expanding bone destructive lesions of any bone. They are common in the metaphysis of long bones but 10-30% involve the spine. Cervical region involvement is uncommon. We report a case of aneurysmal bone cyst of clivus C1 and C2 with minimum symptoms. Involvement of C1 and clivus separately had been reported in past, but simultaneous involv...