PURPOSE: @entity2670 is an uncommon event, both for primary and @entity706 . It presents different diagnostic and therapeutic implications from the more common @entity43 . We investigated the role of imaging techniques in the diagnosis of these lesions. MATERIAL AND METHODS: Eight @entity1 , aged 13 to 70 years (mean: 47) were selected from all the CT examinations performed from 1986 to 1996 to assess the most typical imaging patterns. All the @entity1 underwent a CT examination, with contiguous 8 or 10 mm thick slices and thin (4-5 mm) detailing slices; iodinated contrast agents were administered in 6 cases. Six @entity1 were also examined with sonography (US). Lastly, 3 @entity1 underwent a MR examination, 2 of them with paramagnetic contrast agent. RESULTS: All the @entity1 were affected with @entity1893 (6 diffuse @entity706 --1 lymphoplasmocytoid, 2 Burkitt, 1 large cells, 1 large and oat cells, 1 immunoblastic large cells, 2 follicular large cells @entity706 ). Two @entity1 had primary lesions and the other 6 had a @entity706 ; ovarian involvement was bilateral in 6 cases. The lesion size always exceeded 5 cm. @entity8056 was present in only one case. The US patterns of the lesions were aspecific, homogeneous and hypoechoic; color Doppler US showed mild vascularization. CT showed clear-cut lesions, hypodense and with mild contrast enhancement in all cases. Spin-echo MRI showed homogeneous masses which were moderately hypointense on T1-weighted images and slightly hyperintense on T2-weighted images. Gd-T1-weighted images showed mild enhancement. DISCUSSION: The differential diagnosis of ovarian @entity706 is usually made with @entity43 , which normally have a complex structure with @entity39 and solid components usually enhancing after contrast agent administration. Also @entity242 and, in @entity1 , @entity521 usually have an inhomogeneous structure. In ovarian involvement with @entity706 the concrurrent finding of adenopathy can help the diagnosis. CONCLUSIONS: Despite the absence of typical imaging patterns, we emphasize the importance of considering @entity43 in the differential diagnosis of @entity43 , especially if bilateral and homogeneous, without @entity8056 . These findings, uncommon in @entity43 , can help to make the correct diagnosis.

[ XXXX . Findings with ultrasonography, computerized tomography and magnetic resonance].

@entity43 :: ('MESH:D010051', 'Disease') :: ['ovarian cancers', 'ovarian epithelial tumors', 'ovarian epithelial neoplasms', 'ovarian epithelial cancer', 'ovarian lymphoma'] @entity1 :: ('9606', 'Species') :: ['children', 'patients'] @entity706 :: ('MESH:D008223', 'Disease') :: ['primary lymphoma', 'systemic lymphoma', 'lymphomas'] @entity39 :: ('MESH:D009336', 'Disease') :: ['cystic or necrotic areas'] @entity242 :: ('MESH:D012509', 'Disease') :: ['sarcomas'] @entity8056 :: ('MESH:C536897', 'Disease') :: ['ascitis', 'Ascitis'] @entity521 :: ('MESH:D009447', 'Disease') :: ['neuroblastomas'] @entity2670 :: ('MESH:D010049', 'Disease') :: ['Lymphomatous ovarian involvement'] @entity1893 :: ('MESH:D008228', 'Disease') :: ['non-Hodgkin lymphoma']
@entity43 :: (MESH:D010051,Disease) :: ['Ovarian lymphoma']
