1/21. Intermittent brachiocephalic vein obstruction secondary to a thymic cyst.Mediastinal thymic cysts are usually asymptomatic and found incidentally on a routine chest roentgenogram. Rarely, they may cause symptoms of vascular obstruction. A 55-year-old woman presented with intermittent swelling in her left neck. The swelling was positional and was worse while supine and disappeared while upright. Evaluation revealed a thymic cyst causing extrinsic compression of the left brachiocephalic vein. The cyst was resected with complete resolution of the left neck swelling.- - - - - - - - - - ranking = 1keywords = compression (Clic here for more details about this article) |
2/21. Complications of venous insufficiency after neurotologic-skull base surgery.OBJECTIVE: To characterize the incidence and complications resulting from venous insufficiency after neurotologic-skull base surgery. STUDY DESIGN: Retrospective case review of >3,500 cases. SETTING: Tertiary referral center, inpatient surgery. patients: Six patients: four with complications related to chronic venous insufficiency and two with complications related to acute venous insufficiency. INTERVENTION(S): Medical (steroids, acetazolamide, hyperventilation, mannitol) and surgical (lumboperitoneal shunt, optic nerve decompression, embolectomy) interventions were undertaken. MAIN OUTCOME MEASURE(S): Chronic venous insufficiency: nonobstructive hydrocephalus manifested by headache, disequilibrium, and papilledema with resultant visual loss. Acute venous insufficiency: acute nonobstructive hydrocephalus resulting in mental status abnormalities in the postoperative period. CONCLUSIONS: (1) incidence of 1.5 per 1,000 cases. (2) Acute and chronic forms with different pathogenesis. (3) Acute form presents postoperatively with change in consciousness and herniation, and may proceed to death. (4) Chronic form presents months or years postoperatively with headache, disequilibrium, and visual changes from papilledema. (5) Occurs almost solely in patients with preoperative abnormalities of the venous collecting system. (6) Causes mental status changes postoperatively.- - - - - - - - - - ranking = 1keywords = compression (Clic here for more details about this article) |
3/21. Compression of femoral vein by the strap of a urine-collecting device in a spinal cord injury patient.OBJECTIVE: To report an unusual cause of femoral vein compression in a spinal cord injury (SCI) patient. DESIGN: A case report of a SCI patient in whom the strap of a urinal produced compression of femoral vein. Setting Regional spinal injuries Centre, Southport, england. SUBJECT: A 65-year old male, who had sustained paraplegia at T-10 level 33 years ago, attended the spinal unit for a routine follow-up intravenous urography (IVU). He was wearing a urinal, which was held tightly over the penis by means of two straps coursing over the inguinal regions. MAIN OUTCOME MEASURES: IVU was performed by injecting 50 ml of Ultravist-300 via a 23-gauge butterfly needle inserted in a vein over the dorsum of the left foot. After completion of the injection, an X-ray of the pelvis was taken to evaluate the right hip. This showed contrast in the vena profunda femoris, circumflex femoral veins and inter-muscular veins with evidence of compression of proximal femoral vein. RESULTS: It was suspected that the strap holding the urinal was causing compression of the femoral vein. Therefore, a venogram was performed 5 days later, when the patient had discarded the urinal and the straps. This showed free flow of contrast through the left femoral and iliac veins. CONCLUSION: Compression of femoral vein by a strap holding the urinal was discovered serendipitously in this patient during a routine follow-up. physicians and health professionals should bear in mind this rare complication when examining spinal cord injury patients who use this type of urine collecting device, and discuss with them alternative methods for urinary drainage.- - - - - - - - - - ranking = 4keywords = compression (Clic here for more details about this article) |
4/21. A clinical report about an unusual occurrence of post-anesthetic tongue swelling.dentures are routinely removed from the oral cavity before general anesthetic procedures. They are only reinserted much later when the patient returns to the room. This clinical report describes an edentulous patient who developed acute tongue swelling from venous congestion as a result of tongue recovery from general anesthesia. Her complete dentures were used to separate the residual ridges during the recovery period and relieved the congestion. Denture insertion increased the height and volume of the oral cavity, which reduced pressure on the tongue, preventing a cycle of tongue compression, congestion, and swelling. This unusual complication suggests that it may be prudent for the edentulous patient to be accompanied by their dentures in the perioperative period.- - - - - - - - - - ranking = 1keywords = compression (Clic here for more details about this article) |
5/21. Bilateral retrosternal dislocation and hypertrophy of medial clavicular heads with compression to brachiocephalic vein.A 36-year-old woman with effort dyspnea for 2 years, venous congestion of the left arm for 6 months and who did not have a history of a thoracic trauma was hospitalized. Posterior bilateral dislocation of the sternoclavicular joints and compression of the brachiocephalic vein were diagnosed and conformed by computed tomography (CT). The joint could not be reduced because of the old dislocation and destruction of the joint in the operation. The heads of the clavicles were resected and the vein compression was eliminated. Six weeks later, venous congestion disappeared and the brachiocephalic vein was patent.- - - - - - - - - - ranking = 6keywords = compression (Clic here for more details about this article) |
6/21. Extrapulmonary presentation of asymptomatic pulmonary lymphangioleiomyomatosis.lymphangioleiomyomatosis (LAM) is a rare parenchymal lung disease, which affects young women of childbearing age and is characterized pathologically by proliferation of interstitial smooth muscle and formation of cysts in the lung. While LAM is usually predominantly a respiratory disorder, it can also initially involve other extrapulmonary organs. We report the case of a 35-year-old Chinese woman, who presented with a 4-week history of left thigh swelling which was found to be secondary to compression of pelvic veins by a mass lesion. The latter was found histologically to show LAM. Despite the patient being asymptomatic and displaying normal lung function, a thoracic high resolution CT scan showed typical features of early LAM. This case further illustrates that LAM can have multisystem involvement, and demonstrates the importance of being aware of the diagnosis in cases presenting with extrapulmonary manifestation, in order that patients are diagnosed and managed appropriately.- - - - - - - - - - ranking = 1keywords = compression (Clic here for more details about this article) |
7/21. iliac vein compression and pulmonary embolism in a long distance runner: computed tomography and magnetic resonance imaging-a case report.iliac vein compression is invoked as the explanation for deep venous thrombosis occurring more often in the left iliofemoral system than the right. The authors report a previously undescribed variant of iliac compression whereby a left iliac arterial aneurysm caused venous compression and resultant thrombosis. In this case the patient suffered a pulmonary embolism without symptoms of lower extremity venous thrombosis.- - - - - - - - - - ranking = 7keywords = compression (Clic here for more details about this article) |
8/21. Errors in the differential diagnosis of incompetence of the popliteal vein and short saphenous vein by Doppler ultrasound.Doppler Ultrasound is now routinely used to demonstrate valvular reflux in the venous system. Incompetence detected at the back of the knee is located either in the short saphenous vein or in the popliteal vein. Whether the incompetence is in the deep or superficial venous system can be differentiated by digital compression over the short saphenous vein in the upper calf; if reflux is abolished then the incompetence is assumed to be in the superficial vein but if it is not prevented it must be in the popliteal vein. Sometimes the reflux is not controlled when the deep system is normal. This has been shown to be due to variations in the anatomy of the short saphenous vein and especially the pattern of its termination. Examples with venography are given, showing that in the presence of incompetence at the sapheno-popliteal junction there may be no reflux in the short saphenous vein; instead the proximal tributaries are involved and reflux in these veins is not controlled by pressure over the short saphenous vein. This explains the false positive diagnosis of valvular incompetence in the popliteal vein.- - - - - - - - - - ranking = 1keywords = compression (Clic here for more details about this article) |
9/21. iliac vein bypass with autogenous saphenous vein for iliac vein compression syndrome.A case of chronic obstruction of the left iliac vein is presented. The patient had failed conservative management. Surgical reconstruction was performed using autogenous saphenous vein. The patient has done well; results of a venogram at six months postoperatively indicate the graft is still patent.- - - - - - - - - - ranking = 4keywords = compression (Clic here for more details about this article) |
10/21. Compression of superior vena cava associated with aneurysmal dilatation of left atrium.A patient with rheumatic mitral valve disease and persistently elevated jugular venous pressure (JVP) is described. angiography revealed a valve-like structure in the superior vena cava (SVC) at the site where a pressure gradient was recorded. At operation, this previously unreported anomaly proved to have been caused by aneurysmal dilatation of the left atrium which exerted traction on the pericardial insertion to the SVC. Disinsertion of the pericardial attachment to the vena cava at the time of mitral valve replacement released the compression. Postoperatively, the JVP became normal.- - - - - - - - - - ranking = 1keywords = compression (Clic here for more details about this article) |
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