2 cases of giant intracranial aneurysms with CT di

yxfbbiedtj · Wysłany: Pią 17:41, 25 Mar 2011

2 cases of giant intracranial aneurysms with CT diagnosis

Yun County is an extension of the hospital medical record Example 1: Male patient, 29 years old; the right side of headache, facial numbness and inability to chew more than a month 3. The right front of sudden 1.0 ~ 1,5 mm, no pulse, his right eye was limited outreach, the right facial pain, temperature, tactile loss, slow right corneal reflex, jaw movement-right. In April 1996 to our hospital. CT findings: right middle fossa see slightly higher round-like density image, the realm of a little clearing, CT value 50Hu, right side of the sphenoid ridge, rock sharp bone resorption of bone, superior orbital fissure widened. Enhanced CT findings: After intravenous injection of contrast, the right kind of circular saw fossa images showed uniform enhancement of high density. The video broke into the saddle up on the pool, the lesion area of about 3.5cm × 3.2cm, state clearly, CT value 92Hu. CT diagnosis: the right of the concave cranial aneurysms. Example 2: A male patient, 32 years old; headache, blurred vision six months, his right eye nearly 2 crack shrink more than a month. Right ptosis, right eye blindness, eye fixation, the left eye is normal. CT findings: The right side of the skull has a rounded concave see higher density of shadow, the lesion area of about 3.1cm × 3.2cm, slightly clear state, the right side of the increase in the fossa, right anterior clinoid process, within the sphenoid ridge side of the sharp rocks of bone resorption, the superior orbital fissure widened. CT diagnosis: right middle fossa aneurysms. Enhanced CT findings: right of the circular shadow, and a more uniform density enhancement. CT diagnosis: the concave cranial aneurysms. x ray findings: right carotid artery injection of 76 diatrizoate 60ml, revealed a right internal carotid artery siphon with a contrast agent filling of the circular shadow, an area of about 3.2cm × 3.4cm, 2 carotid artery, 3,4-section image blur. x-ray diagnosis: right internal carotid artery siphon giant aneurysms. 2 ① intracranial aneurysm is a discussion that occurred in the abnormal expansion of focal intracranial arteries, can occur at any age, the time when the aneurysm is greater than 0.5era, CT can show that the group 2 patients with giant aneurysms, CT shows clear, and showed the characteristics of aneurysms. More than a giant aneurysm thrombosis, angiography, contrast agent filling often incomplete, and CT scans can observe the whole picture. To clear indication of aortic aneurysms and vascular affiliation, but also the need for angiography. ~ CT manifestations: two cases of large artery scan density slightly higher realm of clear, enhanced was relatively uniform ring enhancement. According aneurysm without thrombus, CT showed three types: Type 1 for the thin-walled aneurysm without thrombus, the performance of state higher than the density of clear circular image. Type Ⅱ is part of the aneurysm thrombus. 25 * for the full type Ⅲ aneurysm thrombosis, these two cases is I, there is the edge of the bone resorption aneurysms, including the medial sphenoid ridge, clinoid process and petrous before tip. CT signs of aneurysms, and sometimes the lack of features, but the following reference: aneurysm surrounding edema, usually on Sunday as the tumor edema; aneurysm from the subarachnoid space,[link widoczny dla zalogowanych], so the signs as occupying the same volume significant tumor; high-resolution CT also shows the aneurysm and its support vessels connected to the adjacent parts of giant aneurysms in the general bone absorption. Differential Diagnosis: ① the side of the aneurysm in the sella be with pituitary tumor, meningioma, craniopharyngioma, third ventricle tumors and metastases identified. ② posterior fossa cerebral artery aneurysm with the meningioma, acoustic neuroma phase identification. ③ in the brain with the astrocytoma, ependymoma, medulloblastoma phase identification.