ABSTRACT
Melorheostosis is a benign, noninheritable bone dysplasia characterized by its classic radiographic features of dense, flowing hyperostosis. It frequently affects one limb, usually the lower extremity and rarely the axial skeleton. A 26-year-old lady with obesity, polycystic ovarian syndrome and scalp dandruff presented with a long standing history of upper extremity pain and inability to adduct the arm completely. A Tc-99m MDP whole body and SPECT/CT scan performed for suspected fibrous dysplasia showed increased radiotracer uptake in densely sclerotic humeral and radial melorheostosis. This case highlighted the role of SPECT/CT imaging in this rare condition.
ABSTRACT
The authors report a unique case of subarachnoid hemorrhage caused by a traumatic pseudoaneurysm of the ophthalmic artery, which was successfully treated with coil embolization. Clinical and imaging features, as well as the relevant literature, are described.
Subject(s)
Aneurysm, False/complications , Aneurysm, False/therapy , Embolization, Therapeutic/adverse effects , Ophthalmic Artery , Subarachnoid Hemorrhage/etiology , Adult , Aneurysm, Ruptured/complications , Humans , Male , Orbital Fractures/complicationsABSTRACT
Two carotid ophthalmic artery aneurysms with incorporation of the artery into the neck were referred for endovascular assessment. Temporary balloon occlusion at the aneurysm neck was performed in an attempt to assess the adequacy of collateral flow to the retina. During inflation, the patients reported visual deterioration that resolved upon deflation, which indicates that collateral blood flow was insufficient. The patients were referred for surgical clipping to ensure preservation of the ophthalmic artery.
Subject(s)
Aneurysm/physiopathology , Balloon Occlusion , Carotid Artery Diseases/physiopathology , Collateral Circulation , Embolization, Therapeutic , Intracranial Aneurysm/physiopathology , Ophthalmic Artery , Retinal Vessels/physiopathology , Aneurysm/therapy , Carotid Artery Diseases/therapy , Carotid Artery, Internal , Embolization, Therapeutic/instrumentation , Female , Humans , Intracranial Aneurysm/therapy , Middle Aged , Neck/blood supply , Time FactorsABSTRACT
Intramedullary spinal cord surgery can disrupt the blood-spinal cord barrier and cause intravascular contents to leak into the surgical cavity. Immediate postoperative Gd-enhanced magnetic resonance (MR) imaging can demonstrate leakage of contrast into the surgical bed and complicate the assessment of whether a residual enhancing tumor is present. The authors report a case in which the preoperative lesion was nonenhancing and not expected to enhance on postoperative imaging. A Gd-enhanced MR imaging study obtained less than 24 hours after surgery revealed that the intramedullary surgical cavity was filled with contrast material. Because of the time course and the lesion's preoperative appearance, this "enhancement" was known to be caused by the leakage of medium into the resection cavity rather than of pathological soft-tissue enhancement.
