Spontaneous rapid regression of a juvenile primary aneurysmal bone cyst of the skull: A case report and literature review

Aneurysmal bone cyst (ABC) is a benign lesion that often starts off the metaphysis of long bones and which, as it grows, may blow out bone. Only 3%-6% of cases are located in the skull. Spontaneous recovery has been reported. These cases occur more often in adults and in pelvic locations. Spontaneous regression at the skull level remains a very rare entity and few cases were described in the literature. Here, the authors report another case of spontaneous rapid regression of ABC of the skull in a 7-year-old boy revealed by gradually increasing painless hard swelling in the right frontal bone region with rapid spontaneous regression within 15 days. The authors will also proceed with an overview concerning this rare entity.     

Intradiploic frontal bone aneurysmal bone cyst in a child: a case report

This report presents the imaging appearances of an uncommon case of intradiploic frontal bone aneurysmal bone cyst (ABC) in a 10-year-old girl. ABCs are rare in the calvarium. The radiological and aetiopathological differences between the more commonly occurring ABCs of the long bones and vertebrae, and their rarer counterparts in the calvarium and facial bones, have been discussed. Unique also to this case is the reconstruction performed using the outer table of the bone flap after excising the tumour.     

Giant aneurysmal bone cyst of the scapula: A case report

Aneurysmal bone cyst (ABC) is a benign bone tumor affecting mainly children and young adults. It occurs in the metaphysis of the long bones. The scapula is a very rare location. Imaging may be highly suggestive of ABC in cases of an osteolytic, expansive, and hemorrhagic lesion with fluid-fluid levels and thin septa. The diagnosis must systematically be confirmed by performing a biopsy, in order to adopt the best therapeutic strategy. There are several therapeutic means, but wide resection remains the gold standard. The evolution is very variable and can go from spontaneous healing to recurrence with the destruction of the bone. We report a rare case of aneurysmal bone cyst of the scapula in a young patient.     

Biopsy proven eradication of an aneurysmal bone cyst treated by superselective embolization: A case report

A large aneurysmal bone cyst of the upper tibia in a 17-year-old patient was treated by superselective embolization with excellent clinical and radiological results. Extensive curettage and detailed pathologic analysis performed 2 years following embolization revealed only healing bone. The presented case and reviewed cases in the literature indicate that embolization is a promising method for definitive therapy of the aneurysmal bone cyst.     

Benign non-infected urachal cyst in an adult: review of the literature and a case report.

Urachal cyst is rather a rare lesion with interesting and different ways of presentation. More urachal cysts are being shown by ultrasound and computed tomography, and their criteria for diagnosis are discussed.     

Cortical chondroblastoma: report of a case and literature review of this lesion reported in unusual locations

Chondroblastoma is a rare benign tumor occurring in adolescence and young adulthood, almost always involving the epiphysis of long bones. A 24-year-old man presented with a discrete soft-tissue lesion penetrating the cortex of the right distal femoral metadiaphyseal region. Biopsy revealed a chondroblastoma, and the patient subsequently underwent a total curettage of the lesion with cancellous bone graft from the iliac crest.     

Epidermal inclusion cyst of phalanx: a case report and review of the literature

Epidermal cyst within a toe phalanx is an extremely rare condition. It is important to differentiate this benign lesion, which can be easily treated by curettage, from other benign and malignant lesions of the bone with a similar clinical presentation, and which may require amputation of the toe. This report describes one such lesion in the mid-phalanx of the fourth toe in a 48-year-old woman, and which was successfully identified by intra-operative frozen diagnosis and treated by curettage.     

Arachnoid cyst of the craniospinal junction: a case report and review of the literature

Arachnoid cysts are benign intra-arachnoid collections of cerebrospinal fluid and comprise around 1% of the intracranial masses. Unless complicated with hemorrhage, they are similar to cerebrospinal fluid in signal intensity in most cases. Diffusion-weighted magnetic resonance imaging (MRI) reveals that they have no water restriction and distinguishes them from epidermoid cysts, which show water restriction. Arachnoid cysts of the craniospinal junction are rare lesions, with only seven cases reported in the literature. Imaging findings of all craniospinal arachnoid cysts reveal a large posterior fossa arachnoid cyst extending through the foramen magnum to the level of the upper spine. We present MRI findings of a 27-year-old female patient with a craniospinal arachnoid cyst.     

An extraosseous aneurysmal cyst in the pelvic cavity: report of a case

A 51-year-old Japanese female was referred to us with a left lower quadrant pain and palpable mass. The CT and MRI study showed a 10x8x8 cm of well-circumscribed, multicystic mass adjacent to the left iliac bone. The mass was excised and consisted of multiple cysts containing bloody viscous material surrounded by thin-ring of eggshell-like tissue. The histological findings correlated with those of an aneurysmal bone cyst. This extraosseous case might be the first reported case observed in the pelvic cavity.     

骨上皮样血管内皮瘤病例报告并文献复习

目的 探讨骨上皮样血管内皮瘤(EHE)的临床病理特征、治疗以及预后.方法 报道1例EHE患者的症状、体征、病理特点、免疫组化结果、影像学特征及随访结果,并通过复习相关文献,总结EHE的鉴别诊断要点和治疗方法.结果 本研究中EHE病例的症状为局部疼痛,查体发现局部压痛,活动可不受限.典型病理学特征为不同阶段的小血管腔内衬上皮样内皮细胞增生,钉突样凸向腔内,呈墓碑样或灯笼样.免疫组化显示血管源性标记物CD31、CD34、血管内皮生长因子(VEGF)、上皮细胞标记物CK呈阳性表达,肿瘤增殖标记物Ki-67呈低表达.影像学检查可见溶骨性骨破坏.诊断时EHE需要与上皮样血管瘤、上皮样血管肉瘤、动脉瘤样骨囊肿和转移性癌相鉴别.治疗一般先行局部肿瘤广泛切除,手术后予以放射治疗和化学治疗.本例患者在最后一次放疗结束后,右髋部疼痛完全缓解,出院后定期复查,至今未发现疾病进展.结论 原发于骨的EHE是一种少见的低度恶性血管源性肿瘤,应根据病情采取包括肿瘤切除、辅助放疗及化学治疗在内的综合治疗.     

Posterior fossa epithelial cyst: case report and review of the literature.

A 49-year old woman with progressive cranial nerve signs and hemiparesis was found at MR imaging and at surgery to have a cyst at the foramen magnum. Immunohistochemistry and electron microscopy showed an epithelial cyst of endodermal origin. MR findings were of an extraaxial mass, with short T1 and T2 times. Unless immunohistochemistry and electron microscopy are used in the final diagnosis of such cysts, all posterior fossa cysts lined by a single layer of epithelium should be described simply as epithelial cysts.     

Malignant fibrous histiocytoma arising from a hydronephrotic kidney: a case report and review of the literature

Primary malignant fibrous histiocytoma (MFH) is extremely rare, and MFH arising from a hydronephrotic kidney has not been reported. When MFH originates from a long-standing hydronephrotic kidney, the imaging findings can include nearly invisible renal parenchyma and atrophy of the ureter and renal artery, in addition to the findings attributable to the MFH, and the MFH with hydronephrosis may be confused with a cystic renal cell carcinoma.     

Percutaneous treatment of pediatric aneurysmal bone cyst at C1: a minimally invasive alternative: a case report

An 11-year-old girl presenting with neck pain was diagnosed as having an aneurysmal bone cyst involving the posterior arch of C1. Minimally invasive treatment was performed with percutaneous injections of calcitonin and methylprednisolone. Two injections separated in time by 2 months were performed with complete sclerosis and ossification of the cyst over a period of 6 months. Such percutaneous sclerosis offers an important primary therapeutic option or an adjunct to surgery of these otherwise vascular cystic masses and should be contemplated as the initial step in the treatment of these benign tumors, especially those in the spine where surgical treatment can involve complex resection and fixation procedures.     

成软骨细胞瘤误诊1例

患者女,27岁.左膝上内侧发现肿块1年.局部肿痛,活动受限,疼痛呈阵发性,与活动无关,夜间疼痛明显.体检:左股内髁处可触及一约6.0cm× 8.0cm质硬肿块,触痛明显,不能推动,表面光滑,皮温不高.实验室检查:血沉及血常规正常.     

甲状腺功能减退致严重子宫出血1例

甲状腺功能减退系甲状腺激素合成或生理效应不足所引起的机体代谢活动及各系统功能下降的临床综合征.甲状腺功能减退导致子宫不规则过多出血报道很少,易造成漏诊.本文报道1例甲状腺功能减退致严重子宫出血,并结合文献,探讨其诊断和治疗问题.