CT IN MEDIASTINUM.ppt
- 1. CT IN MEDIASTINUM DR. VENUGOPAL M. ASST.PROFESSOR OF IMAGEOLOGY REGIONAL CANCER CENTRE, THIRUVANANTHAPURAM
- 3. • CENTRAL DENSE SHADOW IN PA FILM COMPRISED OF- • MEDIASTINUM • HEART • SPINE • STERNUM
- 4. COMPARTMENTS • DIVISION IS BASED ON CHEST RADIOGRAPH • FACILITATES LESION LOCALISATION • AIDS IN DIAGNOSIS
- 5. • SUPERIOR • ANTERIOR • MIDDLE • POSTERIOR
- 6. SUPERIOR • BETWEEN THORACIC INLET AND SUPERIOR ASPECT OF AORTIC ARCH • ALL MEDIASTINAL STRUCTURES ABOVE AN IMAGINARY LINE DRAWN BETWEEN STERNAL ANGLE AND 4TH INTERVERTEBRAL DISC
- 8. ANTERIOR MEDIASTUNUM • THE SPACE ANTERIOR TO HEART AND GREAT VESSELS • ANTERIORLY STERNUM • POSTERIORLY PERICARDIUM(antr border of pericardium) • CONTENTS-THYMUS, BRANCH OF INTERNAL MAMMARY ARTERY,LNs, FAT
- 10. ACCORDING TO FELSON • ANTR MEDIASTINUM IS BETWEEN STERNUM ANTRLY AND • A LINE DRAWN THRU THE ANTR BORDER OF TRACHEAANDPOSTR BORDER OF HEART AND IVC • THUS HEART IS INCLUDED IN THE ANTR MEDIASTINUM HERE
- 11. FELSONS DIVISION
- 12. M IDDLE MEDIASTINUM • ANTERIORLYANTERIOR BORDER OF PERICARDIUM • POSTERIORLY LINE DRAWN 1 cm POSTERIOR TO THE ANTERIOR BORDER OF VERTEBRAL BODIES • STRUCTURES SEEN WITHIN ARE-
- 13. • HEART • AORTA • SVC • IVC • BRACHIOCEPHALIC ARTERIES AND VEINS • PULMONARY ARTERIES AND VEINS • THORACIC DUCT • AZYGOUS AND HEMIAZYGOUS VEINS • PHRENIC NERVE • VAGUS NERVE • TRACHEA • PROX BRONCHI • MEDIASTINAL FAT • LNs
- 14. POSTERIOR MEDIASTINUM • ANTRLY A LINE DRAWN 1 cm POSTR TO ANTR BORDER OF VERTEBRAL BODIES • POSTERIORLY PARAVERTEBRAL GUTTERS
- 15. CONTENTS OF POSTR MEDIASTINUM • VERTEBRAL COLUMN • NERVES • FAT • LYMPH NODES
- 41. THYMIC CYST
- 42. CYSTIC THYMOMA
- 44. CECT a minimally enhancing anterior mediastinal mass INVASIVE THYMOMA
- 46. CECT SCAN SHOWS A HETEROGENEOUS ANTERIOR MEDIASTINAL MASS WITH AREAS OF FAT , CALCIFICATION , FLUID ATTENUATION, AND THIN SOFT-TISSUE SEPTA.
- 47. LARGE, WELL-DEFINED MEDIASTINAL MASS
- 48. PHOTOGRAPH OF THE SURGICAL SPECIMEN SHOWS AN OVAL MASS WITH SEBACEOUS MATERIAL CARTILAGE, AND NERVE TISSUE
- 49. SHOWS AN ILL-DEFINED ANTERIOR MEDIASTINAL MASS WITH IRREGULAR BORDERS & INFILTRATING THE MEDIASTINAL FAT CT-GUIDED NEEDLE BIOPSY REVEALED A MEDIASTINAL SEMINOMA.
- 50. RECURRENT CHORIOCARCINOMA RT & CT 4 YEARS EARLIER. CECT & T2-WI:- A LOBULATED MASS WITH MIXED SOLID AND CYSTIC COMPONENTS IN THE ANTERIOR MEDIASTINUM.
- 51. NECT SCAN THROUGH THE MEDIASTINUM SHOWS MULTIPLE ENLARGED LYMPH NODES WITH SMALL, BILATERAL PLEURAL EFFUSION.
- 55. CECT SCAN SHOWS A THIN-WALLED WATER-ATTENUATION CYST
- 65. CT SCAN SHOWS A THIN-WALLED WATER-ATTENUATION CYST IN THE POSTERIOR MEDIASTINUM
- 66. CECT scan shows bilateral pleural effusion & thin-walled periaortic cystic lesion that displaces the esophagus anteriorly.
- 67. CHEST CT : LARGE POSTERIOR/MIDDLE MEDIASTINAL MASS WITH INVASION OF THE SUBCARINAL SPACE. PERIPHERAL CALCIFICATION IN THE MASS.
- 68. CT SCAN SHOWS A LOW-ATTENUATION MASS PROTRUDING FROM THE ENLARGED LEFT INTERVERTEBRAL FORAMEN.
- 69. ON A MYELOGRAM, CONTRAST MEDIUM IS SEEN TO PASS INTO THE MENINGOCELE
- 70. CT : a well circumscribed right sided posterior mediastinal mass of mixed fat/soft tissue density. CT upper abdomen show absence of the spleen, without evidence of previous surgical splenectomy
- 71. THANK YOU