Ontology type: schema:ScholarlyArticle
2015-07
AUTHORSSeong Ho Kim, Se Hyung Kim, Min-A Kim, Cheong-il Shin, Joon Koo Han, Byung Ihn Choi
ABSTRACTPURPOSE: To evaluate the differential CT features of gastric poorly-differentiated neuroendocrine tumours (PD-NETs) from well-differentiated NETs (WD-NETs) and gastric adenocarcinomas (ADCs) and to suggest differential features of hepatic metastases from gastric NETs and ADCs. MATERIALS AND METHODS: Our study population was comprised of 36 patients with gastric NETs (18 WD-NETs, 18 PD-NETs) and 38 patients with gastric ADCs who served as our control group. Multiple CT features were assessed to identify significant differential CT findings of PD-NETs from WD-NETs and ADCs. In addition, CT features of hepatic metastases including the metastasis-to-liver ratio were analyzed to differentiate metastatic NETs from ADCs. RESULTS: The presence of metastatic lymph nodes was the sole differentiator of PD-NETs from WD-NETs (P = .001, odds ratio = 56.67), while the presence of intact overlying mucosa with mucosal tenting was the sole significant CT feature differentiating PD-NETs from ADCs (P = .047, odds ratio = 15.3) For hepatic metastases, metastases from NETs were more hyper-attenuated than those from ADCs. CONCLUSION: The presence of metastatic LNs and intact overlying mucosa with mucosal tenting are useful CT discriminators of PD-NETs from WD-NETs and ADCs, respectively. In addition, a higher metastasis-to-liver ratio may help differentiate hepatic metastases of gastric NETs from those of gastric ADCs with high accuracy. KEY POINTS: • Presence of metastatic LNs is a useful differentiator of PD-NETs from WD-NETs. • Intact overlying mucosa with mucosal tenting suggests PD-NETs more than gastric ADCs. • Metastatic LNs are larger in size and greater in necrotic volume in PD-NETs. • Hepatic metastases from gastric NETs are more hyper-attenuated than those from ADCs. More... »
PAGES1946-1957
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DOIhttp://dx.doi.org/10.1007/s00330-015-3600-z
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"description": "PURPOSE: To evaluate the differential CT features of gastric poorly-differentiated neuroendocrine tumours (PD-NETs) from well-differentiated NETs (WD-NETs) and gastric adenocarcinomas (ADCs) and to suggest differential features of hepatic metastases from gastric NETs and ADCs.\nMATERIALS AND METHODS: Our study population was comprised of 36 patients with gastric NETs (18 WD-NETs, 18 PD-NETs) and 38 patients with gastric ADCs who served as our control group. Multiple CT features were assessed to identify significant differential CT findings of PD-NETs from WD-NETs and ADCs. In addition, CT features of hepatic metastases including the metastasis-to-liver ratio were analyzed to differentiate metastatic NETs from ADCs.\nRESULTS: The presence of metastatic lymph nodes was the sole differentiator of PD-NETs from WD-NETs (P\u2009=\u2009.001, odds ratio\u2009=\u200956.67), while the presence of intact overlying mucosa with mucosal tenting was the sole significant CT feature differentiating PD-NETs from ADCs (P\u2009=\u2009.047, odds ratio\u2009=\u200915.3) For hepatic metastases, metastases from NETs were more hyper-attenuated than those from ADCs.\nCONCLUSION: The presence of metastatic LNs and intact overlying mucosa with mucosal tenting are useful CT discriminators of PD-NETs from WD-NETs and ADCs, respectively. In addition, a higher metastasis-to-liver ratio may help differentiate hepatic metastases of gastric NETs from those of gastric ADCs with high accuracy.\nKEY POINTS: \u2022 Presence of metastatic LNs is a useful differentiator of PD-NETs from WD-NETs. \u2022 Intact overlying mucosa with mucosal tenting suggests PD-NETs more than gastric ADCs. \u2022 Metastatic LNs are larger in size and greater in necrotic volume in PD-NETs. \u2022 Hepatic metastases from gastric NETs are more hyper-attenuated than those from ADCs.",
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