Ct scan eye slide presentation
- 1. Imaging eye lesion DR. Rekha Khare M.D. Radiology
- 2. Common clinical problem to image PROPTOSIS
- 3. Proptosis It is abnormal protrusion of eye ball _unilateral _bilateral
- 4. Causes of proptosis V_ vascular ( av malformation ) E_ endocrinal ( thyrotoxicosis ) I_ Infection/ inflammation N_ neoplasm ( primary/ secondary ) ( local/ intracranial )
- 5. Imaging modality Plain X- ray_ no value Ultrasound_ little help CT scan MRI scan
- 6. CT versus MRI MRI_ superb tissue contrast choice of imaging if available and affordable
- 7. Contd. CT scan_ -tissue contrast just comparable -easily affordable and available -easy assessment of PNS/ nasal cavity and or bone involvement -intracranial extension “Common diagnostic tool in routine”
- 8. What to see on CT scan? eye ball eye muscles ( extra ocular ) retro bulbar space optic nerve bony socket adjoining paranasal sinus/ nasal cavity intracranial tissue
- 9. Eye image on CT scan
- 10. Eye mass_ proptosis Ring enhanced cystic lesion in Rt. retro bulbar region ? abscess (HIV+ve)
- 11. Eye mass_ proptosis Ring enhanced lesion in retro bulbar region + ethmoidal sinusitis ? abscess
- 12. Eye mass_ proptosis Retrobulbar mass nature?
- 13. Eye mass_ Proptosis Homogenous enhanced few calcification obscuring optic nerve ? Meningioma
- 14. Same case Retrobulbar mass compressing extraocular muscles deforming eye ball
- 15. Proptosis Thick extraocular muscles and Optic nerve (HIV+ve case) ? Lymphoma D/D thyrotoxicosis ( fusiform muscles)
- 16. Thyrotoxicosis fusiform extraocular muscle
- 18. Eye mass_ proptosis Soft tissue mass obscuring optic nerve infiltrating lat. muscle ? Optic nerve sheath meningioma
- 19. Eye mass_ proptosis Enhanced mass medial retrobulbar region displacing optic nerve? pseudo- tumour
- 20. Eye mass_ proptosis Enhanced mass from extraocular muscle ?Lymphoma ?? rhabdomyosarcoma
- 21. Eye mass_ proptosis Heterogenous enhanced mass filling retrobulbar region, deforming eye ball? Malignant mass
- 22. Extra orbital lesions Lesions can cause proptosis if from paranasal sinus/ nasal cavity or intracranial mass extension or bones in surrounding
- 23. Proptosis _ post. op case Intracranial mass/ abscess with bone destruction Check next slice
- 24. Same case Extracerebral mass/abscess drainage done aggressive infection gone deep
- 25. Proptosis Calcific density mass Rt. Retrobulbar pushing eye ball anteriorly ? Congenital bony Dysplasia
- 26. Proptosis Extra orbital midline malignant mass from base of skull
- 27. Paranasal sinus Nonenhanced expansile cystic mass lesion in Rt. frontal sinus ? mucocele
- 28. Paranasal sinus Nonenhanced expansile cystic mass lesion in Rt. frontal sinus ? mucocele
- 29. Paranasal sinus Frontal mucocele
- 30. Paranasal sinus Huge soft tissue mass displacing and compressing eye ball ? ethmoidal mucocele
- 31. Paranasal Sinus Ethmoidal mucocele
- 32. Paranasal sinus Nonenhanced expansile cystic lesion in sphenoidal sinus ?mucocele might cause proptosis if huge
- 33. Paranasal sinus_ mass Paranasal sinus mass extending orbital fossa
- 34. Other paranasal sinus lesion Few paranasal sinus lesions might cause eye problem or proptosis if the lesion is severe
- 35. Paranasal sinuses Thin wall enhanced lobulated cystic mass in both maxillary sinuses ? Mucosal cyst
- 36. Paranasal sinuses Air fluid level in Rt. Maxillary sinus ? sinusitis
- 37. Paranasal sinuses Irregular mucosal thickening Lt. maxillary sinus Calcified mucosa Rt. Maxillary sinus ? Chronic sinusitis
- 38. Mass face Mass Rt maxillary antrum, filling nasal cavity, crossing midline ? malignancy
- 39. Mass face Advance malignancy Rt. maxillary antrum
- 40. Intracranial mass well enhanced suprasellar mass involving Rt. Optic nerve? meningioma
- 41. Same case Huge mass with hydrocephalus
- 42. AVM dilated sup. Ophth.vein