结论：乙状结肠镜直视下给药为一有效、简便、安全的治疗溃疡性直肠乙状结肠炎的方法。
Conclusions Drug treatment through sigmoidoscope is a effective, safe a nd convenient therapeutic way for ulcerative colitis.
活动性非特异性结肠炎的患者在回盲部和直肠乙状结肠交界部均可见到肥大细胞的轻度增加，但与正常对照组相比没有统计学意义。
The number of mast cells in the ileocecal and rectosigmoid junctions increased with no statistical significance in patients with active and nonspecific colonitis.
结论：溃疡性结肠炎病变主要位于直肠和乙状结肠。
Conclusions: Focus of the disease is situated in rectum and sigmoid colon.
结论：溃疡性结肠炎病变主要位于直肠和乙状结肠。
Conclusions: Focus of the disease is situated in rectum and sigmoid colon.
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