[Computed tomography features and pathological correlations of primitive XXXX ].

@entity1 @entity8 @entity39 @entity5 @entity4969 @entity730 @entity703
OBJECTIVE: To explore the computed tomography (CT) features and pathological correlations of primitive @entity4969 (PNET) of the kidney. METHODS: The CT features of 5 cases of pathologically confirmed PNETs were retrospectively reviewed along with a literature review to analyze the CT features and pathological correlations. RESULTS: The age range was 19-78 years. CT image showed solitary mass of heterogeneous density with ill-defined margins. One case had multifocal @entity39 . Among 3 cases of cystic changes, there were mural nodule (n = 2) and patchy @entity730 (n = 1). Four cases showed @entity8 with cortical interruption (n = 3) and destruction of renal capsule and invasion into perirenal fat space (n = 1). The @entity5 were confined to kidney contour with enlarged kidney (n = 3). All 5 cases showed slight heterogenous enhancement in cortico-medullary phase with persistent moderate enhancement (n = 4) and persistent mild enhancement (n = 1) in nephrographic phase. CONCLUSION: @entity703 is common in young @entity1 with a high degree of @entity5 . CT features include large mass with heterogenous density and poor-defined border confined within renal contour. Necrosis and cystic changes occur commonly with invasive growth. Persistent enhancement is found during nephrographic phase. A definite diagnosis is dependent upon pathological and immunohistochemical examinations.
