TY - JOUR
T1 - Lymph-node metastases
T2 - Efficacy of detection with helical CT in patients with gastric cancer
AU - Fukuya, Tatsuro
AU - Honda, Hiroshi
AU - Hayashi, Takamoto
AU - Kaneko, Kuniyuki
AU - Tateshi, Yuko
AU - Ro, Tokugen
AU - Maehara, Yoshihiko
AU - Tanaka, Masao
AU - Tsuneyoshi, Masazumi
AU - Masuda, Kouji
PY - 1995/12
Y1 - 1995/12
N2 - PURPOSE: To determine the efficacy of helical computed tomography (CT) in the detection of lymphadenopathy in patients with gastric cancer. MATERIALS AND METHODS: Helical CT (5-mm section thickness, 5-mm/sec table incrementation) was performed in 58 patients (39 men, 19 women; mean age, 63.8 years) with gastric cancer; 1,082 lymph nodes (138 positive, 944 negative for metastasis) were resected at surgery. Findings at CT and resection were compared. Sensitivity for detecting lymph nodes was evaluated according to nodal size and presence of metastasis. RESULTS: Seven (1.1%) of 649 lymph nodes 1-4 mm, 160 (45.1%) of 355 nodes 5-9 mm, and 56 (72%) of 78 nodes larger than 9 mm were detected at CT. For nodes of at least 5 mm, sensitivity for detecting metastasis-positive nodes (79 [75.2%] of 105 nodes) was higher than that for detecting metastasis-negative nodes (137 [41.8%] of 328; P < .01). Differences between positive and negative nodes in CT attenuation (110 HU ± 25 vs 66 HU ± 32) and short-to-long axis ratios (0.81 ± 0.15 vs 0.57 ± 0.15; P < .001) were significant. CONCLUSION: Helical CT is effective for detection of metastatic lymphadenopathy from gastric cancer. CT attenuation and lymph-node configuration aid in diagnosis of malignant adenopathy.
AB - PURPOSE: To determine the efficacy of helical computed tomography (CT) in the detection of lymphadenopathy in patients with gastric cancer. MATERIALS AND METHODS: Helical CT (5-mm section thickness, 5-mm/sec table incrementation) was performed in 58 patients (39 men, 19 women; mean age, 63.8 years) with gastric cancer; 1,082 lymph nodes (138 positive, 944 negative for metastasis) were resected at surgery. Findings at CT and resection were compared. Sensitivity for detecting lymph nodes was evaluated according to nodal size and presence of metastasis. RESULTS: Seven (1.1%) of 649 lymph nodes 1-4 mm, 160 (45.1%) of 355 nodes 5-9 mm, and 56 (72%) of 78 nodes larger than 9 mm were detected at CT. For nodes of at least 5 mm, sensitivity for detecting metastasis-positive nodes (79 [75.2%] of 105 nodes) was higher than that for detecting metastasis-negative nodes (137 [41.8%] of 328; P < .01). Differences between positive and negative nodes in CT attenuation (110 HU ± 25 vs 66 HU ± 32) and short-to-long axis ratios (0.81 ± 0.15 vs 0.57 ± 0.15; P < .001) were significant. CONCLUSION: Helical CT is effective for detection of metastatic lymphadenopathy from gastric cancer. CT attenuation and lymph-node configuration aid in diagnosis of malignant adenopathy.
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U2 - 10.1148/radiology.197.3.7480743
DO - 10.1148/radiology.197.3.7480743
M3 - Article
C2 - 7480743
AN - SCOPUS:0028827326
SN - 0033-8419
VL - 197
SP - 705
EP - 711
JO - Radiology
JF - Radiology
IS - 3
ER -
