Publication: Diffusion MRI on lymph node staging of gastric adenocarcinoma
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Date
2015-06-01
Authors
HASBAHCECI, Mustafa
Akcakaya, ADEM
Memmi, NAİM
TURKMEN, Ihsan
Cipe, Gokhan
Yildiz, PELİN
Arici, DİLEK SEMA
MUSLUMANOGLU, Mahmut
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Abstract
Objective: The purpose of this study was to evaluate the accuracy of diffusion weighted magnetic
resonance imaging (MRI) in preoperative assessment of metastatic lymph nodes of gastric cancer.
Methods: A total of 23 gastric cancer patients with a mean age of 59.4±10.9 years were analyzed. Lymph
nodes were grouped as perigastric lesser curvature (Group Ia), perigastric greater curvature (Group Ib),
D1+/D2 lymph nodes (Group II). Identification of histologically metastatic lymph nodes by diffusion
weighted MRI was regarded as the main outcome.
Results: A total of 1,056 lymph nodes including 180 histologically proven metastatic lymph nodes were
dissected. Although diffusion weighted MRI could identify the metastatic lymph nodes in 18 out of 23
patients (77.8%), only 69 of total 1,056 nodes (6.53%), either metastatic or non-metastatic, could be
detected. There was no correlation between histopathology and diffusion weighted MRI with regard to
lymph node groups (P>0.05 for all). Overall accuracy was calculated as 69.56, 65.21 and 52.17 for Groups
II, Ib and Ia lymph nodes, respectively. Apparent diffusion coefficient (ADC) values could not be helpful to
differentiate metastatic lymph nodes (P=0.673).
Conclusions: Diffusion weighted MRI has low accuracy to detect or to differentiate metastatic and
non-metastatic lymph nodes based on their ADC values in gastric cancer.
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Citation
HASBAHCECI M., Akcakaya A., Memmi N., TURKMEN I., Cipe G., Yildiz P., Arici D. S. , MUSLUMANOGLU M., -Diffusion MRI on lymph node staging of gastric adenocarcinoma-, QUANTITATIVE IMAGING IN MEDICINE AND SURGERY, cilt.5, ss.392-400, 2015