PURPOSE: To assess the role of blood vessels in the formation of peritumoral abnormal signal intensity which exaggerates the size of malignant tumor on MR images. MATERIALS AND METHODS: We performed MR-microangiographic-pathologic correlation using implanted VX-2 carcinoma in 16 rabbit thighs 1-28 days after tumor implantation. The shape and distribution of abnormal vessels were analyzed on microangiography and on histologic examination in correlation with peritumoral abnormal signal intensity on MR images. RESULTS: Dilated peritumoral blood vessels gave rise to irregular, tortuous tumor vessels penetrated into the tumor. With the tumor growth, hypervascular tumor vessels in peritumoral area and central avascular areas were increased. These hypervascular areas on microangiography were corresponded with abnormal signal intensity on MR images. CONCLUSION: Hypervascularity could be a cause of peritumoral abnormal signal intensity which exaggerates the size of experimentally induced malignant musculoskeletal tumors on MR images.
Blood Vessels* ; Thigh

No abstract available.
Blood Vessels* ; Spleen*

Background: peripheral vascular wounds/trauma is a severe type of surgical emergency, the increasing rate due to the rapid increase of traffic, labor and living accidents. Subjectives and Method: retrospective study, all patients with peripheral vascular wounds/traumas (alone or combination in multiple trauma) were emergency operated at Viet Duc Hospital from January 2004 to June 2006. Results: A total of 310 patients with peripheral vascular injuries in the study, of which accounted for 62.3% of injury, trauma group accounted for 37.7%. The mean age of 30. In first aid, pressed tape accounted for high rate (71.5%). Rate of popliteal vascular trauma due to fractures around the knee accounted for 65.5%, the rate of brachial vascular trauma with fractures around the elbow was 50%. Rate of late diagnosis of arterial trauma was 14.6%, higher than the arterial wounds (2.6%). The rate of ultrasound for forelimbs - where vessels were many wounds, was lower than that for hindlimbs - where vessels were many traumas (44% vs 67.9%). For vascular wounds, more directly vascular connection and more intervention on veins, whereas, for arterial trauma, more vascular graft. Rate of complications was low (7.4%), with no deaths. Conclusions: Overall, the results of emergency surgery for peripheral vascular wounds/trauma were well. No cases was death from vascular lesions, rate of complications was low.
Blood Vessels/ injuries ; Emergencies ;

A study on the effects of Morinda citrifolia (MC) extract on the isolated blood vessels and water-electrolyte excretion by Lipschitz method. Results: MC in both concentrations of 1.25% and 2.5% had a vascular dilating effect of the rabbit ears without change vasoconstriction effect of adrenalin with concentration of 1/10 000. By oral administration, MC in doses of 0.3g, 0.6g and 0.9g/kg body weight increased the elimination of Na(+), K(+), Cl(-), but did not influence the elimination of Ca++ and urine amount at the rest time
Morinda ; Blood Vessels

Hemangiolymphangioma is a malformation of both lymphatic and blood vessels. While a hemangiolymphangioma is a benign lesion, its propensity to invade underlying tissues and to recur locally distinguishes it from the simple lymphangioma or hemangioma. Hemangiolymphangiomas are uncommon developmental anomalies and intraosseous hemangiolymphangioma of the mandible is a relatively rare condition: when it occurs, the clinical and radiographic presentation are often nonspecific. The author presents a case of hemangiolymphangioma in mandible.
Blood Vessels ; Hemangioma ; Lymphangioma ; Mandible*

Angioleiomyomas are relatively uncommon benign tumors originating from smooth cells of a blood vessel. Although curative by surgical excision, they are rarely diagnosed definitely before surgery. We report on a case of calcified angioleiomyoma occurring on the sole, which was treated by surgical excision without recurrence and a review of literature is presented.
Angiomyoma* ; Blood Vessels ; Foot ; Recurrence

Spinal hemangioma is the uncommon, slowly growing benign tumor that arses from the blood vessels and was commonly located in the thoracic spine. The authors experienced 4 cases of spinal hemangioma from the thoracic spine that are diagnosed by simple spine X-ray, spine CT with myelography and confirmed by histological examination. We reviewed the literature concemed with spinal hemangioma.
Blood Vessels ; Hemangioma ; Myelography ; Spine

Adipocytes ; chemistry ; Blood Vessels ; Cytokines

Blood Vessels ; Humans ; Stromal Cells

Kimura's disease is a rare chronic inflammatory disorder mimicking a malignant tumor. It usually occurs in the head and neck regions, but occasionally shows up in the groin. A gray-scale groin sonograph showed a lobulated hypoechoic mass. Color Doppler sonography revealed the paucity of blood vessels within the mass.
Blood Vessels ; Groin ; Head ; Neck