iothalamate-meglumine and Arteriovenous-Malformations

To present the CT characteristics of histologically confirmed venous vascular malformations limited to the submandibular triangle in patients without clinical stigmata of venous vascular malformations.. The clinical records and CT scans of five women with venous vascular malformations limited to the submandibular triangle were reviewed. Patients ranged from 39 to 70 years of age. None of the patients had a history of malignant tumors. All patients presented with a solitary suprahyoid neck mass. None of the patients demonstrated cutaneous manifestations of venous vascular malformation.. Contrast-enhanced CT scans in all five patients demonstrated a lobulated, heterogeneously enhancing, well-circumscribed solid mass, separable from the submandibular gland. Areas of contrast enhancement within each mass were isodense to the internal jugular vein in four of five cases. Only two of five lesions demonstrated focal calcifications. Excisional biopsy (two patients) demonstrated pathologic features compatible with venous vascular malformation. Fine needle aspirations (three patients) yielded venous blood or blood-tinged fluid.. Venous vascular malformations may present as isolated neck masses in adults without typical clinical stigmata. Clues to the CT diagnosis include a lobulated appearance to the mass with intense but heterogeneous contrast enhancement. This appearance, in combination with results of fine needle aspiration, may be sufficiently diagnostic to preclude excisional biopsy.

Topics: Adult; Aged; Arteriovenous Malformations; Biopsy, Needle; Calcinosis; Diagnosis, Differential; Female; Humans; Iothalamate Meglumine; Middle Aged; Retrospective Studies; Submandibular Gland; Submandibular Gland Diseases; Tomography, X-Ray Computed; Veins

Seventeen cases of spinal cord arteriovenous malformation (AVM) were evaluated by use of spinal dynamic computed tomography (CT). In the intravenous injection method, contrast medium was injected bolusly into the median cubital vein. In the intraarterial injection method, contrast medium was injected slowly into the feeding artery. In both methods, lesions were demonstrated in all cases. Three-dimensional localization of the lesions were more clearly demonstrated in the intraarterial injection method. Intravenous injection method was useful in the postoperative follow-up study due to its noninvasiveness.

Topics: Adolescent; Adult; Aged; Angiography; Arteriovenous Malformations; Female; Follow-Up Studies; Humans; Iothalamate Meglumine; Male; Meninges; Middle Aged; Spinal Cord; Spinal Nerve Roots; Tomography, X-Ray Computed

Topics: Adult; Arteriovenous Malformations; Humans; Iothalamate Meglumine; Male; Myelography; Seizures; Spinal Cord; Tomography, X-Ray Computed