累及骶骨的骨盆恶性肿瘤切除及重建

目的 探讨累及骶骨的骨盆恶性肿瘤合理的手术切除及重建方式.方法 1999年7月至2007年7月,共有19例累及骶骨的骨盆恶性肿瘤患者在北京大学人民医院骨肿瘤科接受肿瘤切除重建手术.平均年龄37岁(12～78岁);男性12例,女性7例. 其中,软骨肉瘤5例、尤文肉瘤4例、骨肉瘤4例、恶性纤维组织细胞瘤(MFH)1例、骨巨细胞瘤1例、转移癌4例.切除髂骨翼及部分骶骨、保留髋臼手术10例,采用了钉棒系统内固定,其中5例患者同时进行了自体腓骨或髂骨植骨;切除部分骶骨、髂骨翼及髋臼手术9例,应用组配式人工半骨盆重建骨盆环完整性.结果 肿瘤学结果:7例出现局部复发(7/19,36.9%),其中骨肉瘤2例、软骨肉瘤2例、尤文肉瘤2例及转移癌1例.19例患者随访时间为1至7年,平均4.5年.功能结果:9例保留髋臼、钉棒重建的患者术后正常行走,无步态异常.9例行Ⅱ区肿瘤切除、人工半骨盆重建的患者中,8例术后2个月能够扶拐行走.ISOLS评分平均20分以上,其中,良好3例,一般5例,较差1例.人工半骨盆重建的患者中,术后脱位1例,行切开复位;因深部感染取出假体1例.结论 对于保留髋臼的髂骨肿瘤切除,采用钉棒内固定结合自体骨植骨是一种理想的重建骨盆环稳定性的方法,可使患者早期恢复行走功能.将股骨头颈植于骶骨侧方,将组配式人工半骨盆卡于质骨块的下方,重建累及骶骨及髋臼的骨盆切除,是一种可取的重建方式.     

Radiation-associated venous stenosis: endovascular treatment options

We report a case of radiation-induced venous stenosis after pelvic irradiation to treat Paget's disease of the scrotum. During therapeutic anticoagulation, significant left lower extremity swelling developed due to an iliofemoral deep venous thrombosis (DVT). After percutaneous thrombectomy and thrombolysis, a high-grade stenosis was uncovered in the left external iliac vein, which was treated with an endoluminal stent. However, ipsilateral DVT recurred 2 months later despite continued anticoagulation therapy. Repeat treatment was successful. Pelvic radiation is a potential cause of iliac vein stenosis. Pharmacomechanical thrombectomy may have a useful role in management of complex iliofemoral DVT.     

High-grade undifferentiated pleomorphic sarcoma of pelvis treated with curettage and bone graft after complete remission following caffeine-potentiated chemotherapy

Undifferentiated pleomorphic sarcoma (formerly known as malignant fibrous histiocytoma: MFH) is a relatively rare primary malignant bone tumor first described by Norman and Feldman [1] as a malignant histiocytoma. It comprises approximately 6% of all bone tumors [2, 3]. It was reported that the osteosarcoma adjuvant or neoadjuvant chemotherapeutic regimen is beneficial [4], and a good pathological response predicted better disease-free survival [5]. Caffeine is a xanthine analog that has a biochemical modulating effect as an inhibitor of DNA repair, and may inhibit the post-replication repair of sublethally damaged DNA [6, 7]. Caffeine-potentiated chemotherapy has been administered to patients with high-grade bone and soft-tissue sarcomas since 1989, because caffeine enhances the cytocidal effects of anticancer drugs through the inhibition of DNA repair. Approximately 15% of primary malignant bone tumors involve the pelvic girdle [8]. Periacetabular lesions are the most difficult sites to reconstruct because of their complicated anatomical structure, and complication rates—including deep infection (12–47%), implant dislocation (2–22%), or local recurrence (28–35%)—are still high in pelvic lesions [9–13].     

Long-term clinical outcome of sacral chondrosarcoma treated by total en bloc sacrectomy and reconstruction of lumbosacral and pelvic ring using intraoperative extracorporeal irradiated autologous tumor-bearing sacrum: a case report with 10 years follow-up

Background contextPrimary malignant tumors of the sacrum are rare. Chondrosarcoma is one of the common malignant tumors arising from the sacrum. Chondrosarcoma is often invasive, and there is a high propensity for local recurrence. Surgical resection is often the only effective treatment; however, the treatment of malignant sacral tumors can be challenging, both because of the anatomy of the spinopelvic complex and the frequently large tumor size.PurposeWe report a case of sacral chondrosarcoma that was successfully treated by total en bloc sacrectomy and reconstruction of the lumbosacral and pelvic ring using intraoperative extracorporeal irradiated autologous tumor-bearing sacrum.Study designA case report with 10 years follow-up.MethodsA 51-year-old man presented with right lower leg pain. Plain radiographs and computed tomography (CT) showed an osteolytic lesion at the sacrum that extended to the sacroiliac joint. Magnetic resonance imaging demonstrated that the tumor mass was localized from S1 to S2 with an epidural lesion at L5–S1 disc level. Histopathologic evaluation by open biopsy revealed that the lesion was chondrosarcoma. Total en bloc sacrectomy of the tumor-bearing sacrum was performed. The removed tumor-bearing sacrum was extracorporeally irradiated at 200 Gy during the operation and returned to the original position as a bone graft and fixed with instruments thereafter.ResultsWe needed two revision surgeries during the first 3 years because of the implant failures; however, 10 years after the initial surgery, CT revealed that the irradiated sacrum had remodeled into living bone and integrated with surrounding iliac bone without radiological evidence of tumor recurrence. The patient ambulates without any support and there was no clinical and radiological evidence of tumor recurrence.ConclusionsThe advantages of our method include the availability of high dose of radiation because of extracorporeal irradiation, excellent fit between graft and host bone, reduction of the dead space, no immunological rejection, no need for a bone bank, availability of the sacrum not only for the augmentation of the large defect but also for the scaffold for the other bone grafts. Our report is of only one case; however, we consider that it could be one option for the treatment of sacral malignant bone tumors, such as chondrosarcoma.     

Intrakortikales dedifferenziertes Chondrosarkom

Chondrosarcoma is the second most frequent mesenchymal malignant tumour of the bone. Classification of this kind of tumour is made by clinical, radiological und pathological means. A case of an intracortical chondrosarcoma was first reported by Babinet et al. 2003 [2]. During the staging examination of a 59-year-old patient referred to our clinic because of a squamous cell carcinoma of the oropharynx, we also found a highly malignant intracortical dedifferentiated chondrosarcoma of the distal femur shaft. Due to the primary assumption of bone metastasis of the oropharynx tumour, marginal extralesional tumour resection was performed followed by composite osteosynthesis. Considerations on differential diagnosis and their implications for further therapy are discussed.     

盆腔肿瘤所致下肢深静脉血栓形成的诊治

目的 探讨盆腔肿瘤所致下肢深静脉血栓形成的早期诊断和治疗.方法 回顾性分析1997年1月至2009年4月12年间收治的36例以下肢深静脉血栓形成为首发表现的盆腔肿瘤患者的临床资料,总结早期诊断和治疗的方法.结果 本组36例患者均为慢性起病、无明确诱因.且进行性加重.25例经正规深静脉血栓治疗症状无好转甚至加重.所有患者均经盆腔B超、CT等检查发现盆腔肿瘤,肿瘤对髂股静脉存在明显压迫.29例行肿瘤切除术,同时结扎髂静脉(其中5例行髂动脉人工血管重建),余24例未处理盆腔肿块.所有患者均给予抗凝、弹力袜支持、改善微循环等治疗,患肢肿胀均有不同程度好转.结论 深静脉血栓形成可能是盆腔肿瘤的先兆,对无明确诱因、慢性起病、肢体进行性肿胀的下肢深静脉血栓形成患者,及经正规治疗症状无改善或病情反复甚至加重的患者,应考虑是否存在盆腔肿瘤.其治疗原则为手术切除盆腔肿瘤和保守治疗下肢深静脉血栓.     

Ligamentum flavum hematoma in the lumbar spine

Sciatica due to lumbar or sacral root compression frequently is caused by lumbar disc herniation, lumbar spinal canal stenosis, tumor, or cyst. Far less common is ligamentum flavum hematoma (LFH). Two patients with LFH reported by Sweasey et al. [1] in 1992 were probably the first described worldwide. These two patients presented signs and symptoms suggestive of lumbar root compression. Since then, some case reports of LFH have appeared [2–27].     

Massive pulmonary embolism caused by internal iliac vein thrombosis with free-floating thrombus formation in the inferior vena cava

Nowadays, compression ultrasonography (CUS) is the gold standard for the routine diagnosis of deep venous thrombosis (DVT). The drawback of CUS is the low sensitivity concerning the diagnosis of isolated pelvic vein thrombosis, especially referring to isolated internal iliac vein and ovarian vein thromboses. Therefore, magnetic resonance (MR) venography has become a valuable alternative. We present the case of a 45-year-old female patient with a massive pulmonary embolism with the indication for thrombolytic therapy due to severe right ventricular overload. We were not able to detect a DVT in the lower limbs of this patient with CUS. However, further DVT workup by MR venography showed a free-floating thrombus formation originating from the right internal iliac veins into the inferior vena cava. Owing to the fact that this thrombus was free floating, surgical removal of the thrombus was scheduled and performed successfully. In some patients it might be important to look for so-called rare causes of pulmonary embolism, even when CUS of the lower limbs does not reveal any DVTs. The diagnostic procedure of choice for these patients seems to be MR phlebography, as iliac and pelvic veins can be evaluated without radiation exposure with this procedure.     

髂部肿瘤切除重建钢板重建骨盆环

目的：探讨髂部肿瘤切除自体髂骨翻转植骨重建钢板重建骨盆环的临床疗效。方法：回顾分析12例髂骨肿瘤应用此法治疗效果,其中男8例,女4例,骨盆肿瘤Enneking分区全部为1区肿瘤,骨巨细胞瘤5例,动脉瘤样骨囊肿2例,软骨肉瘤2例,骨转移瘤2例,骨肉瘤1例。肿瘤全部行瘤段切除。结果：本组12例病人全部进行随访,随访时间6月－3,平均12个月。植骨全部愈合,平均骨愈合时间3月。1例骨肉瘤患者术后8月局部复发,术后1年死于肺转移。全部病例均可负重行走,髋关节功能正常。结论：肿瘤切除自体髂骨翻转植骨＋重建钢板重建骨盆环是一种较好的治疗髂骨肿瘤的保肢方法,但对于2B期髂骨肿瘤应慎用。     

Malignant Epithelioid Angiosarcoma of the External Iliac Vein Presenting as Venous Thrombosis

A case is reported of a 28-year-old female who initially presented with a right iliac deep venous thrombosis of unclear etiology. A stenosis in the iliac vein was seen, but no intrinsic or extrinsic mass was noted on multiple imaging studies. The patient presented 2 years later with right hydronephrosis, and at that time a right pelvic mass was discovered. Resection was performed with concomitant reconstruction of the right iliac arterial system, and pathology revealed a malignant epithelioid angiosarcoma.     

Successful renal transplantation in the right iliac fossa 2 years after serious deep venous thrombosis in a patient with systemic lupus erythematosus

Deep venous thrombosis (DVT) possibly occurs in the perioperative period, and induces serious complications such as a pulmonary embolism. On the other hand, allograft renal vein thrombosis leads to a high incidence of graft loss. We experienced a case in which a serious DVT occurred prior to renal transplantation; however, a successful renal transplantation in the right iliac fossa was performed after 2 years of anticoagulant therapy. It is suggested that the external iliac vein even after suffering from DVT can be anastomosed to an allograft vein successfully, when enough blood fl ow or a lower venous pressure is confirmed. However, one should be aware of the risk factors and the adequate management of thrombosis in renal transplantation because of the serious complications of DVT and the poor prognosis of allograft vein thrombosis.     

Proximal extent of pelvic vein thrombosis and its association with pulmonary embolism

OBJECTIVE: Conventional methods such as duplex ultrasound scanning do not provide accurate information about proximal extension of pelvic vein thrombosis. We evaluated proximal extent of thrombus toward pelvic veins with magnetic resonance imaging in patients with suspected deep vein thrombosis (DVT) proximal to the inguinal ligament on the basis of duplex ultrasound scans. In addition, frequency of pulmonary embolism (PE) and early (4 weeks) clinical outcome were evaluated. METHODS: Two hundred twelve patients with acute symptomatic DVT proximal to the inguinal ligament, diagnosed at duplex ultrasound scanning, were enrolled in this prospective study. All patients underwent magnetic resonance imaging of the abdominal and pelvic veins, as well as lung scintigraphy to detect the presence of pulmonary embolism. RESULTS: In 24 of 212 patients (11%), thrombus was restricted to the femoral vein. The thrombus extended into iliac veins in 142 patients (67%) and into the inferior vena cava in 46 patients (22%). The frequency of PE was not associated with the most proximal extension of thrombus (P =.61). No patients died as a consequence of thromboembolic events. CONCLUSIONS: Extension of DVT into the inferior vena cava occurs relatively frequently. In our patients this finding was not associated with higher risk for PE compared with DVT of the femoral or iliac veins.     

骶骨肿瘤的分区切除与重建方式的选择

目的：探讨对骶骨肿瘤按其发生部位进行分区切除，选择相应重建方式的方法及疗效。方法：1988年2月-2005年1月手术治疗43例骶骨肿瘤患者，按肿瘤侵及部位（即上段骶骨、骶髂关节及骶髂关节水平向外的髂骨是否被破坏）对骶骨肿瘤进行分区切除并重建，相应的手术及重建方式包括单纯切除、钢针加塑形骨水泥（CPC）重建骶骨、钢板螺钉固定或骶骨螺钉固定重建骶髂关节、不同长度的Luque棒或髂骨棒加钢丝缠扎或TSRH或Isola或CGWS腰椎骨盆内固定。并给予相应的放疗与化疗。结果：术后出现脑脊液漏2例，切口感染及延期愈合3例，切口皮肤边缘坏死1例，下肢深静脉血栓形成1例，经积极处理后均治愈。随访1-17年，平均75个月，43例患者中39例（90．7％）术后疼痛得到缓解，视觉模拟疼痛评分由术前平均8．5分降低到术后3.4分（P〈0．01）。14例有神经功能损害的患者中，11例术后症状改善，3例无改善。20例行自体和或异体植骨的患者术后1年16例获得骨性融合。3例脊索瘤、3例恶性纤维组织细胞瘤和4例骨巨细胞瘤患者于术后1年因复发而进行1次或多次手术，其中有5例和1例骨髓瘤、1例转移癌患者于术后17-50个月因肺部和全身转移死亡。发生断棒2例，均再次手术更换断棒。结论：按肿瘤部位进行分区切除，选择相应的重建方式，达到尽可能广泛切除肿瘤组织和维持脊柱及骨盆稳定性的目的．是取得良好疗效的重要保证。     

Mesenchymal chondrosarcoma originating from the femoral vein

Mesenchymal chondrosarcoma is a rare variant of chondrosarcomas characterized by a bimorphic pattern with areas of the undifferentiated malignant small cells and well differentiated cartilaginous islands.(1) It occurs most commonly in the bone but can also occur in the extraskeletal soft tissues, the brain, and the meninges. This type of tumor has also been described in the eyelids, parapharyngeal space, mediastinum, and the kidney.(1-5) An origin from the large vessels has not been reported in the medical literature. The authors report a case of mesenchymal chondrosarcoma originating from the femoral vein in a 28-year-old female patient, treated by the wide-margin resection.     

External iliac vein thrombosis in an athletic cyclist with a history of external iliac artery endofibrosis and thrombosis

External iliac artery endofibrosis describes an intimal subendothelial fibrosis leading to wall thickening and stenosis that has been described in high-performance athletes. There are anatomical, mechanical, and probably metabolic factors that may contribute to this pathology. Ankle-brachial index (ABI) measurement with exercise testing, duplex ultrasound, computed tomography (CT) or magnetic resonance (MR) angiogram, and ultimately arteriography help to make the diagnosis. Management can be conservative, but most cases require surgical intervention. External iliac vein stenosis and thrombosis in cyclists has rarely been described in the literature. We report a case of extensive left lower limb deep venous thrombosis (DVT) including the external iliac vein diagnosed in a 57-year-old athletic cyclist with a history of external iliac artery thrombosis.     

Pelvic ring reconstruction with a vascularized pedicle iliac bone graft for a large sacral schwannoma

A case of pelvic ring reconstruction with a vascularized pedicle iliac bone graft for removal of a huge sacral schwannoma is reported. It is necessary to reconstruct a pelvic ring when its integrity is impaired. Spinal instrumentation is essential for a temporary stability of the pelvic ring in the course of complete healing, which at times results in instrumentation failure. Several cases of pelvic ring reconstruction using vascularized fibular bone grafts have also indicated positive results attributable to their good blood circulation, but techniques with them are relatively complicated. We applied a vascularized pedicle iliac bone graft to the pelvic ring reconstruction after resection of a huge sacral schwannoma. When a stable pelvic ring was regained by using a lumbosacral instrumentation technique, a tricortical iliac bone graft with its vascular pedicle was harvested, transported into the dead space, and tied to the right residual sacrum and the left ilium. The vascularized graft healed rapidly, and continuity of the pelvic ring was regained. This method is effective for pelvic ring reconstruction in that it does not require microvascular techniques and rapid bone healing can be obtained.     

腹主动脉球囊临时阻断技术在骨盆及骶骨肿瘤切除术的应用进展

骨盆和骶骨肿瘤由于其解剖复杂,周围毗邻重要的血管、神经、内脏器官,且肿瘤发病相对隐蔽,早期症状不明显,发现时肿瘤体积巨大,肿瘤血供丰富。因此手术切除和重建的难度大,最主要的困难仍是大出血的问题,在某些情况下,失血量会危及生命,巨大的手术风险使很多骨肿瘤大夫望而却步。受到战伤腹主动脉球囊成功发挥"血管内止血带"的启示,国...     

Giant,invasive sacral schwannoma extending to the 4th lumbar spine

In this report, we describe a case with giant sacral schwannoma, which invasively extended to the 4th lumbar spine and to the surrounding sacral and iliac bone. A 26-year-old female was admitted to our hospital because of numbness and transient weakness of the right leg, and dysuria. Radiological examinations revealed that a giant sacral tumor, associated with multiple cystic formations, had invasively extended to the 4th lumbar spine, sacrum, and iliac bone. She underwent partial removal of the tumor, followed by irradiation. Pathological diagnosis was schwannoma. Subsequently, she underwent a second operation because of tumor regrowth 15 months later, and the tumor was totally removed. Numbness of the right leg resolved after surgery. No tumor recurrence has been noted during 5-year follow-up period. Previously, only 5 cases have been reported of invasive sacral schwannoma extending to the lumbar spine. Our experience in this rare case strongly suggests that aggressive resection should be aimed to improve long-term outcome.     

Ventral interbody spondylodesis using a new plug-shaped implant

A new technique for interbody lumbar spondylodesis using a new cancellous metal, plug-shaped construct was performed in 35 cases with spondylolisthesis or lumbar instability. All of these patients have had severe low-back pain for years, some with radicular symptoms and had been treated unsuccessfully for years. In a follow-up study, 28 of these patients were examined after a time-period of 4 to 24 months. According to objective criteria, the clinical results were good in 19 cases, moderate in five cases and poor in one case. The patients' own judgement about the success of the operation was somewhat differnt: 17 patients judged their condition as good, six as moderate and two as poor. For three patients the follow-up examination was so close to surgery that no judgement can be made. We saw postoperative complications in two cases: one was a fracture of the implant, the other was a deep vein thrombosis.Since the first reports about ventral spondylodesis byCapener [4] andBurns [2] in the years 1932 and 1933 this surgical technique has been under discussion world-wide. This discussion even increased afterHormon [10] published some reports about his experience with this operative treatment in 1948. Since that time, many techniques for the intercorporal fusion of the spine have been reported. These include tibial or iliac bone grafts, sometimes fixed with screws or plates [6, 9, 12, 17, 20]. This article now describes the new surgical technique for ventral spondylodesis, using a new implant for the interbody fusion of the lumbar and sacral spine. In addition, we describe the indications for ventral spondylodesis and report the results of a rather small follow-up study.     

手术取栓联合腔内介入治疗急性深静脉血栓的临床分析

目的 总结手术取栓联合腔内介入治疗急性髂股深静脉血栓(DVT)的临床经验.方法 2008年10月至2010年12月,15例急性DVT患者接受手术取栓联合同侧髂静脉腔内支架植入术.男性6例,女性9例;年龄36～71岁,平均57.4岁.DVT位于左股、髂及下腔静脉内2例,双侧髂静脉1例,其余12例均在左髂股静脉.所有患者表现患肢明显肿胀,其中12例伴有患肢疼痛.DVT发病时间平均为3.3 d.诱发DVT的原因包括外科手术6例,DVT复发2例,其余7例病因不清.并发症包括消化道出血1例,胃溃疡1例,高血压3例,脑梗死1例.取栓之前均先经右股静脉穿刺植入下腔静脉滤器(包括1例双髂静脉血栓患者),取栓之后术中造影均发现髂静脉受压致重度狭窄或完全闭塞,均先行球囊血管成形后植入自膨式支架.结果 术中造影证实髂静脉压迫综合征12例,取栓后残留狭窄3例.共植入18枚自膨式支架,手术成功率15/15,30 d病死率为0;1例术后伤口出现血肿,保守治疗后痊愈.12例获得随访,随访时间为2～26个月,平均13.3个月.所有患者疼痛消失,仅2例表现为活动后患肢轻度肿胀.所有患者均未出现血栓复发.结论 手术取栓联合腔内介入治疗急性DVT安全有效,早期临床结果满意,并发症发生率低.