镰状细胞危象中出现严重的腹痛，可见具有血红蛋白SS的镰状红细胞。镰状细胞易于粘连在一起，堵塞小血管，血流减少而导致局部缺血。
Here is another example of sickled erythrocytes in a patient with Hgb SS who presented with severe abdominal pain in sickle crisis. The sickled cells are prone to stick together, plugging smaller vessels and leading to decreased blood flow with ischemia.
