الفهرس 
Middle mediastinum:
Technique of CT imagingOnly 14 pages are availabe for public view
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Abstract
Summary & Conclusion
This thesis aimed at evaluation of the role of multidetector CT in
diagnosis of mediastinal masses based on the characteristic imaging
appearances which can lead to a correct diagnosis and optimal management.
Post processing techniques (coronal& sagittal reconstructions, VR
,MIP & 3D techniques) further improve the diagnosis &surgical planning .
MDCT has shorter imaging time & better spatial resolution than MRI
especially in the mediastinum; besides being more widely available & less
expensive. The additional role of CT is in performing CT guided biopsies if
needed.
Mediastinal masses can be asymptomatic or symptomatic; most of
symptoms occurs due to pressure effect and small size of the chest cavity in
infants and children, The symptoms which most commonly observed are
persistent cough and dyspnea
This study included 40 patients with mediastinal masses evaluated
according to clinical data, diagnostic Procedure (MDCT), histopathological
evaluation. Cases with anterior mediastinal masses were 40%, middle were
20% and those with posterior mediastinal masses were 40%.
Masses of anterior mediastinum include thymoma , lymphoma , mature
teratoma , retrosternal thyroid and Morgagni hernia . while masses of middle
mediastinum include aortic aneurysm, Hiatus hernia ,lymphoma and
lymphadenopathy. Whereas neuroblastoma , ganglioneuroma ,
schwannomatosis , esophageal lesions (esophageal leiomyoma , oesophageal
achalasia ,oeophageal carcinoma) and Bockdalek hernia are masses of
posterior mediastinum