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- W93548384 abstract "To describe the occurrence and significance of mucosal lymphangiectasia in gastric adenocarcinoma.One hundred consecutive gastrectomies for adenocarcinoma were reviewed, using 25 consecutive gastroscopically biopsied gastrectomy specimens with peptic ulcers as negative controls.The specimens were collected over a period of 25 months in two general hospitals and processed according to a standard protocol.Chinese living in Hong Kong.Twenty cases of adenocarcinoma were found to show mucosal lymphangiectasia, which was arbitrarily defined as the presence of ectatic lymphatic channels in the lamina propria having maximum dimensions greater than that of a foveolar gland. The ectatic lymphatics were lined by simple endothelium, devoid of fibromuscular wall, and they either were optically empty or contained scant mononuclear leukocytes. None of the patients had preoperative evidence of malabsorption syndrome or protein-losing enteropathy. Lymphangiectasia was most readily seen in the superficial lamina propria near the main tumor. In 10 cases (50%), lymphangiectasia extended to the nonneoplastic part of the gastric mucosa, at a distance of at least 2 cm away from the main tumor. Tumor emboli were seen in the ectatic lymphatics in 11 cases (55%). In two cases (10%), the distal line of resection was involved by intramucosal lymphatic spread. The tumor permeating the lymphatics did not evoke any inflammatory or desmoplastic reaction in the perilymphatic lamina propria, similar to the phenomenon of so-called lymphangitis carcinomatosa. In eight cases (40%), there were foci beyond the main tumor where mucosal lymphangiectasia was present, but without tumor in its immediate vicinity. All (100%) of the 20 stomachs with mucosal lymphangiectasia had metastases in regional lymph nodes, whereas only 59 of the 80 cases (73.75%) without lymphangiectasia were node-positive (P < .025). All node-negative cases did not show lymphangiectasia. Twenty-five consecutive gastrectomies for peptic ulcer disease that had undergone preoperative mucosal biopsies showed no lymphangiectasia, suggesting that mucosal biopsy was not the cause of mucosal lymphangiectasia.(1) Gastric mucosal lymphangiectasia is associated with carcinoma but not peptic ulcer, (2) Mucosal lymphangiectasia in gastric carcinoma signifies lymph node metastases, and (3) Gastric carcinoma can spread along the mucosa via intramucosal lymphatics." @default.
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- W93548384 date "1996-01-01" @default.
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- W93548384 title "Mucosal lymphangiectasia in gastric adenocarcinoma." @default.
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