随着医疗及影像诊断技术的进步,垂体腺瘤发现时的体积也越来越小,目前头颅MRI仍是诊断垂体微腺瘤最重要的检查方法。但是,由于瘤体直径过小或形态特殊等原因,在MRI上可表现为假阴性或可疑阳性,本文就这类垂体微腺瘤假阴性之表现对其原因、图像特点和进一步的诊治方法进行综述。 With the progress of medical and imaging diagnostic techniques, the volume of pituitary adenoma is also getting smaller and smaller, the current diagnosis of pituitary adenoma is still the most important MRI examination method. However, due to the tumor diameter is too small or special shape and other reasons, MRI can be expressed as a false negative or suspicious positive, this article on the performance of this type of pituitary adenoma false negatives its causes, image characteristics and further diagnosis and treatment methods Summary.