BACKGROUND AND PURPOSE: The brain perivascular spaces (PVSs) are pial-lined,
interstitial fluid-filled structures that accompany penetrating arteries. When enlarged, they …

Perivascular spaces (PVSs), also known as Virchow‐Robin spaces, are pial‐lined, fluid‐
filled structures found in characteristic locations throughout the brain. They can become …

Cystic parenchymal lesions may pose an important diagnostic challenge, particularly when
encountered in unexpected locations. Dilated perivascular spaces, which may mimic cystic …

Object. Dilations of brain perivascular spaces (PVSs), also known as Virchow—Robin
spaces, are routinely identified on magnetic resonance imaging studies of the brain and …

The purpose of this article is to illustrate the imaging findings of lesions that present as cyst
with a mural nodule tumor (CMNT). CMNT is a subtype pattern of intra-axial enhancement in …

Cysts and cystic-appearing intracranial masses have a broad imaging and pathologic
spectra. The authors review the pathologic findings, origin, radiologic appearance, and …

Cysts and cystic-appearing intracranial lesions are common findings with routine cerebral
imaging examination. These lesions often represent a challenge in diagnosis. Intracranial …

The differential diagnosis of intracranial cystic lesions at head ultrasonography (US)
includes a broad spectrum of conditions:(a) normal variants,(b) developmental cystic …

Sinus pericranii is a rare circumscribed fluctuating vascular swelling of the scalp that
communicates with the intracranial venous system. It has been associated with other …

Object. The behavior of brain tissue in cases of arteriovenous malformations (AVMs) is a
matter of debate. The authors believe that the local microvascular environment in the AVM …