pancreatic pseudocyst

?leukoencephalomalacia

?TARLOV'S CYST / ARACHNOID CYST

CYST IN THE FILUM TERMINALE

HEMANGIOMA liver

centripetal enhancement of the lesion

this contrast enhance MRI shows garland like enhancement of the lesion...confirming it to be a glioblastoma multiforme

the precontrast MR sequences reveal a heterogenous intensity lesion involving the left temporal lobe.

the lesion is compressing the adjacent lateral ventricle

there is significant mass effect and midline shift

there is also peri lesional edema.

the mixed intensity appearance wity midline crossing suggested it to be GBM..

the postcontrast sequences confirmed the diagnosis by showing ring enhancement in a garland-like pattern

CATAMENIAL PNEUMOTHORAX

Catamenial pneumothorax is the most common form of thoracic endometriosis syndrome, which also includes catamenial hemothorax, catamenial hemoptysis, catamenial hemopneumothorax and endometriosis lung nodules, as well as some exceptional presentations

Endometriosis can attach to the lung, forming chocolate-like cysts. Generally the parietal pleura is involved, but the lung itself, the visceral layer, the diaphragm, and more rarely the tracheobronchial tree may also be afflicted.

PNEUMOPERICARDIUM

CHEST X RAY (NEJM)
pneumopericardium

A computed tomographic scan (not shown)of the chest confirmed the diagnosis of pneumopericardium and showed circumferential wall thickening of the distal esophagus with an associated esophagopericardial fistula.

craniopharyngioma

A heterogenously intense lesion is ssen in the seelar and supra sellar region evident on T2WI

the lesion appears iso to hypointense on T1WI

the lesion is compressing the thalamus and hypothalamus posteriorly

the lesion is compressing the third venticle

post contrast sequences reveal intense enhancement of the lesion which is heterogenous

possibility of pituitary tumour ---CRANIOPHARYN-

GIOMA

EMPYEMA WITH AIR POCKETS

CHEST X RAY

radiopacities are seen in the left lower zone without sillhouting of diaphragm and left heart border

the opacities are forming obtuse angle with the chest wall---pleural based

CT chest
a lenticular shaped pleural based isodense collection is seen in left hemithorax with evidence of air pockets

---?empyema with air pockets

INFARCT , basal ganglia calcif

an infarct is seen in teh left parietal region

there is calcification of bilateral basal ganglia

a hypodense area is seen involving the right frontal ,temporal and parietal lobes wth mass effect and midline shift

---infarct in area of right middle cerebral artery

AGRESSIVE MEININGIOMA

a broad based heterogenously hyperintense lesion is seen in the left frontal area

there is some marginal enhancement

the lesion is compressing the lateral ventricle with midline shift

there is some perilesional edema

note is made of hyperostosis in the adjacent bone

--?aggressive meningioma

?SUB ARACHNOID CYST

MRI of cervical spine

shows a hyperintense lesion in the subarachnoid space at level of C7-D1

--the cystic lesion is entering the neural foramen--->

?subarachnoid cyst

HEMANGIOMA LIVER

contrast enhancing CT liver

first a scan is taken without contrast (shown in the lower two scans)

--there is a hypodense lesion involving the right lobe of liver

---the lesion shows areas of hypodensity

---post contrast scan shows--in 2-3 min..only peripheral enhancement

----followed by a centripetal enhancement of the lesion by contrast

----->