title: [Extranodale lymphomas infradiaphragmal].
abstract: Non-Hodgkin's lymphoma occurs in up to 30% primarily out of lymph nodes (extranodal). In the abdomen, beside spleen and liver the gastrointestinal tract is often and the kidneys are not rarely affected. However, each abdominal organ and peritoneal space, muscles and skin can be affected at various frequencies. While an exclusive manifestation within an organ without lymphadenopathy is rather unusual, often a concomitant lymphadenopathy is present. A secondary infiltration of an organ due to widespread lymphoma,hematogenous spread or relapse occurs more frequently. On the other hand, in Hodgkin's lymphoma, except spleen and liver other organs are only rarely affected. Mostly it occurs by direct invasion from adjacent pathological lymph nodes.Frequency, morphology at and problems of imaging of extranodal lymphoma are presented.
authors.affiliation: Institut für Radiologie, St.-Johannes-Hospital, Duisburg.
authors.forename: R
authors.initials: R
authors.lastname: Erlemann
authors.forename: A
authors.initials: A
authors.lastname: Schmitz
authors.forename: M
authors.initials: M
authors.lastname: Stroeken
authors.forename: R
authors.initials: R
authors.lastname: Ubrig von Barany
authors.forename: J
authors.initials: J
authors.lastname: Gerharz
mesh_terms: D000008:Abdominal Neoplasms / Q000175:diagnosis* / Q000473:pathology; D005260:Female; D006689:Hodgkin Disease / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D007089:Image Enhancement; D007091:Image Processing, Computer-Assisted; D008198:Lymph Nodes / Q000473:pathology; D008228:Lymphoma, Non-Hodgkin / Q000175:diagnosis* / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008297:Male; D009361:Neoplasm Invasiveness / Q000473:pathology; D009367:Neoplasm Staging; D011379:Prognosis; D014057:Tomography, X-Ray Computed