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THE PETROSQUAMOUSAL SINUS: A RARE MORPHOLOGIC VARIANT OF POSTERIOR FOSSA DURAL SINUSES AND EMISSARY VEINS

INTRODUCTION : The emissary veins play a role in the extracranial venous drainage of the dural sinuses by connecting the internal and external venous network of the skull. The petrosquamosal sinus (PSS) is considered an emissary vein. The PSS is a well known yet rarely reported anatomical variant among the transmastoid emissary vein outlets. The …

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ANEURYSMAL BONE CYST- DIAGNOSED BY CT SCAN AND CT GUIDED TRUCUT BIOPSY

Clinical history: 20 year old male presented with midly painful expansile swelling around the left knee. Imaging findings: Well defined, expansile lytic lesion noted along the medial aspect of the metadiaphyseal region of the distal left femur (yellow arrow) with mild adjacent periosteal reaction (blue arrows). The distal femoral cortex is significantly expanded and thinned …

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