Diagnostic power of 64-channel multidetector CT with three dimensional images in evaluating and staging gastric lymphoma

Abstract

Objectives: To assess the diagnostic power of 64 channel multidetector CT with three-dimensional images in evaluating and staging gastric lymphoma. Patients and methods: CT imaging of selected 30 cases with gastric lymphomas proved by histopathology was reviewed retrospectively. CT findings correlated with the pathologic types of gastric lymphoma. Results: All the 30 cases were non-Hodgkin’s lymphomas (NHL). There are two different lymphoma subtypes (diffuse large B cell lymphoma, 17 patients (56.66%) and MALT lymphoma, 13 patients (43.33%)). Primary lymphoma was detected in 6/30 cases (20%) while secondary lymphoma was detected in 24/30 cases (80%). Further staging of our patients was divided into high grade (9/30) patients and low grade (21/30) patients. Most gastric lesion was located in the antrum (29/30, 66.66%) and body of stomach (22/30, 73.33%). Gastric wall thickness ranged from 20 to 60 mm (mean 32.22 ± 14 mm). There are four different patterns of gastric involvement by lymphoma: focal (20%), diffuse thickening (33.3%), diffuse thickening and nodular pattern (33.3%), and ulcerative pattern (13.3%). 12/30 cases (40%) had regional abdominal lymphadenopathy, distant LNs enlargement was detected in 2 patients (6.6%) beneath renal hilum, splenomegaly was detected in 7 patients (7 (23.33%), and splenic focal lesion was detected in one patient (3.33%). Conclusion: MDCT with 3D images provides valuable results regarding diagnosis and staging of gastric lymphomas.

Keywords

• MDCT
• Gastric lymphoma
• MALT lymphoma
• Staging