n. melena
misc. tarry stool
临床表现 一、呕血(Hematemesis)与黑便(Melena)：特征性表现 上消化道出血后均有黑粪，不一定有呕血；有呕血者一般均有黑粪。 幽门以下部位出血一般只有?
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Abdominal pain, mass and melena indicated small intestine tumor,especially leiomyosarcoma.
对腹痛、腹部肿块、黑便患者如已排除胃结肠病变应高度怀疑小肠肿瘤,特别是平滑肌肉瘤的可能性。
参考来源 - 小肠肿瘤48例临床分析·2,447,543篇论文数据，部分数据来源于NoteExpress
术后密切观察患者生命体征，进食情况，腹痛腹胀，恶心呕吐，是否有呕血及黑便。
After operation, we closely observe the vital signs, eating situation, abdominal pain and abdominal distention, nausea and vomiting, whether hematemesis and melena of patients.
本病临床上多为某些疾病或因素引起的并发症，临床主要表现为呕血，黑便或无明显症状。
The symptoms were mostly caused by certain diseases or complications of factors, clinical manifestations were vomiting blood, black stool or no obvious symptoms.
结果：20例患者的临床表现均无特异性，上腹疼痛最为常见，其次是饥饿痛、腹胀、恶心、呕吐、黑便等。
Results: the symptoms of these 20 patients were non-specific, upper abdominal pain was most common and hunger pain, abdominal distention, nausea, vomiting, melena being the next.
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