Giant cell tumor of the capitate

Giant cell tumors are primary bone tumors most often observed in the metaepiphyses of long bones; location in the hand, especially the carpal bones, is rare. We report a patient with recurrent giant cell tumor of the capitate and discuss treatment and prognosis in this rare site.     

Desmoplastic fibroblastoma of the thigh. A case report

Desmoplastic fibroblastoma (DF) is an extremely rare benign soft tissue tumor, prevalent in adult men, mostly arising in deep regions of extremities. The tumor presents with a slowly growing and no recurrence or metastases after surgical excision. Histologically, DF is characterized by a collagenous stroma that contains spindle- and stellated-shaped fibroblastic cells positive for vimentin. Differential diagnosis with locally aggressive soft tissue tumors could be difficult. This case report deals with the clinical pathological and immunoistochemical features of a DF of the left thigh in a 63-years old man.     

Epidermoid cysts of the cranial bones.

Ectodermally derived tissue in ectopic sites is seen in the head and neck. Extracranial dermoid and epidermoid tumors are relatively rare. While most otolaryngologists are familiar with the cholesteatoma of the otic area, not very many are exposed to this lesion in other sites. Those of the cranial bones are even rarer still. These tumors may expand (1) laterally in the cranial bones, (2) externally to present as masses in the scalp or facial region, or (3) internally to involve the intracranial contents. A patient with a frontal bone epidermoid, whose tumor had expanded in all three directions to erode both inner and outer cortex of cranium and laterally to rupture into the frontal sinus, is discussed. The literature is reviewed and the management of these rare masses is discussed.     

Osteoquine application in complex treatment of the diabetic foot]

Results of treatment of 84 patients with diabetic foot (DF) were analyzed, in whom, according to the radiologic investigation data, osteoporosis of the foot bones was revealed. Impact of osteochine was studied in 40 patients with DF and signs of the foot bones osteoporosis. Positive result of osteochine usage was noted in 90% patients, what had permitted to reduce duration of treatment in stationary by 8.3 days. Negative results of preparation application were not observed.     

附件骨MRI鉴别诊断脊椎骨髓瘤和转移瘤

目的：探讨附件骨MRI在脊椎骨髓瘤、转移瘤鉴别诊断。方法：分析侵及附件骨的脊椎骨髓瘤、转移瘤各32例，包括病变的数目、分布、形态、大小等方面。结果：脊椎骨髓瘤附件骨弥漫性受侵，呈小斑片状、结节状，附件骨的形态多无明显改变，其周围很少有软组织肿块包绕。而脊椎转移瘤附件骨多为单一部位受累，呈团块状，形态较大，多有肿块包绕，常致附件骨增粗较明显，甚至完全破坏。结论：脊椎骨髓瘤、转移瘤附件骨MRI表现的差异性，有助于对二者的鉴别，为临床治疗方法的选择提供可靠依据。     

Osteoblastoma of the metacarpal: A case report.

Osteoblastoma is a rare tumor, but the small bones of the hands and feet are the second most common location. Despite this, the diagnosis of osteoblastoma is rarely considered in the differential diagnosis of bone tumors of the hand. This is a case similar to Jaffe and Mayer's original report.     

Giant Intradiploic Epidermoid Cyst of Greater Sphenoid Wing Causing Unilateral Proptosis and Optic Nerve Compression

Epidermoids are cystic tumors that arise from aberrant epidermal cells. Intradiploic epidermoids are relatively rare tumors that occur in all bones of the calvarium, temporal and sphenoid bones, paranasal sinuses, and maxilla. We report the case of an intradiploic epidermoid of the sphenoid wing causing severe proptosis and visual loss. Theories of embryogenesis and pathophysiology are discussed.     

Renal cell carcinoma with metastases to the triquetrum: case report

Metastatic tumors of the hand are rare, with fewer than 200 cases reported in the literature. Renal cell carcinoma is among the most common tumors to metastasize, but we are not aware of reports of this tumor metastasizing to the carpal bones. We describe a case of renal cell carcinoma that metastasized to the triquetrum to draw attention to the potential for such lesions developing within the hand and wrist.     

Giant intradiploic epidermoid cyst of greater sphenoid wing causing unilateral proptosis and optic nerve compression

Epidermoids are cystic tumors that arise from aberrant epidermal cells. Intradiploic epidermoids are relatively rare tumors that occur in all bones of the calvarium, temporal and sphenoid bones, paranasal sinuses, and maxilla. We report the case of an intradiploic epidermoid of the sphenoid wing causing severe proptosis and visual loss. Theories of embryogenesis and pathophysiology are discussed.     

Solitary osteochondroma of the capitate,in a child

Osteochondromas, are the most common tumors of the long bones in children. Osteochondromas are extremely rare in the carpal bones. They are diagnosed in adult life, in almost all cases in the literature. We report a 7?year old boy, who presented with a hard mass on the dorsum of his hand, with decreased wrist movements. Radiological examination showed a calcified tumor of the second row of the carpal bones, with spherical shape and covered with cartilage. He was surgically treated with removal of a cartilaginous mass that was arising from the capitate. Pathology confirmed the diagnosis of an osteochondroma.     

Ewing's sarcoma of proximal phalanx of the hand with skip metastases to metacarpals

Ewing''s sarcoma is the second most common malignant primary bone tumor of childhood and adolescence affecting mainly the diaphysis of long bones and flat bones. This tumor is extraordinarily rare in small bones of the hand and presents as a swelling with atypical radiological features of cystic and lytic lesion with scant periosteal reaction. The common differential diagnosis include osteomyelitis, tuberculosis, enchondroma and benign tumors. Moreover, skip metastasis to adjacent bones is even rarer. The prognosis of this condition is greatly influenced by the presence of metastasis at presentation, further emphasizing the importance of early diagnosis. Multimodality treatment using surgery, radiotherapy and chemotherapy is currently recommended though no consensus exists. We report a case of Ewing''s sarcoma of the little finger proximal phalanx which was initially missed and developed skip metastasis to several metacarpals within 4 months.     

Giant cell tumor of the frontal bone in a girl: case report

A 2-year-old female presented with a rare case of recurrent giant cell tumor affecting the frontal bone. She had already undergone partial removal twice at the ages of 14 and 18 months. The tumor was located in the frontal bone, expanding to the ethmoid and orbital bones, and invading the frontal base dura mater. The tumor was totally removed including the surrounding bone and frontal base dura mater. No local recurrence and metastasis were observed at 18 months after the last operation. Most giant cell tumors occur in the epiphyses of long bones and are rare in the cranio-facial bone. These tumors usually affect young adults and few pediatric cases are reported.     

Chondrosarcoma of the pubis imitating bladder tumor radiologically: a case report

Chondrosarcoma is a rare tumor that more frequently involves the pelvic bones, the femur, and the humerus. The rareness of the tumor makes the diagnosis difficult. Malignant cartilage tumors typically have an unstable radiographic appearance. In this report we aimed to point out the difficulties of the radiological differentiation of the pelvic chondrosarcoma and bladder tumor.     

Epiphyseal primary location for osteosarcoma and Ewing sarcoma in patients with open physis

Conventional osteosarcoma and Ewing sarcoma are the most common childhood malignant tumors of bone. These tumors arise in the metaphysis and diaphysis of long bones and may extend secondarily into the epiphysis. Primary epiphyseal location for these tumors is rare and may constitute a diagnostic and therapeutic challenge. The authors report two skeletally immature patients with an osteosarcoma and Ewing sarcoma limited to the epiphysis. Clinical, radiographic and histopathologic findings are discussed.     

Malignant bone tumors of the chest wall.

Malignant bone tumors constitute only 0.2% of all tumors. Bone sarcomas occur at a rate approximately one tenth that of sarcomas of the soft tissue. Malignant bone tumors of the chest wall and sternum are even more rare because most bone tumors occur in the long bones or joints. Because of the relative paucity of experience treating these malignancies, progress in successful therapies has been limited. Chondrosarcomas remain the most common bony malignant chest wall lesions and are discussed elsewhere in this issue. Other lesions in descending order of incidence include Ewing's sarcoma, osteosarcoma, malignant fibrous histiocytoma, solitary plasmacytoma, and Askin tumors. This article reviews these remaining five malignant bony chest wall tumors, along with their symptoms, presentations, and current approaches to therapy.     

手部肿瘤566例分析

目的 探讨手部软组织肿瘤和骨肿瘤的发病情况.方法 对1985年1月至2006年12月期间,治疗并经病理证实的手部软组织肿瘤和骨肿瘤566例进行回顾性分析.结果 手部软组织肿瘤以血管瘤最为多见.余依次为腱鞘巨细胞瘤、腱鞘囊肿、血管球瘤等;骨肿瘤以内生软骨瘤最为多见,骨软骨瘤、骨巨细胞瘤偶有发生;手部骨转移癌较少见.结论 手部软组织肿瘤和骨肿瘤以良性肿瘤最为多见,采取积极、合理的治疗效果满意.手部恶性肿瘤和转移癌偶发,应引起注意并加以鉴别.     

手部肿瘤566例分析

目的 探讨手部软组织肿瘤和骨肿瘤的发病情况.方法 对1985年1月至2006年12月期间,治疗并经病理证实的手部软组织肿瘤和骨肿瘤566例进行回顾性分析.结果 手部软组织肿瘤以血管瘤最为多见.余依次为腱鞘巨细胞瘤、腱鞘囊肿、血管球瘤等;骨肿瘤以内生软骨瘤最为多见,骨软骨瘤、骨巨细胞瘤偶有发生;手部骨转移癌较少见.结论 手部软组织肿瘤和骨肿瘤以良性肿瘤最为多见,采取积极、合理的治疗效果满意.手部恶性肿瘤和转移癌偶发,应引起注意并加以鉴别.     

手部肿瘤566例分析

目的 探讨手部软组织肿瘤和骨肿瘤的发病情况.方法 对1985年1月至2006年12月期间,治疗并经病理证实的手部软组织肿瘤和骨肿瘤566例进行回顾性分析.结果 手部软组织肿瘤以血管瘤最为多见.余依次为腱鞘巨细胞瘤、腱鞘囊肿、血管球瘤等;骨肿瘤以内生软骨瘤最为多见,骨软骨瘤、骨巨细胞瘤偶有发生;手部骨转移癌较少见.结论 手部软组织肿瘤和骨肿瘤以良性肿瘤最为多见,采取积极、合理的治疗效果满意.手部恶性肿瘤和转移癌偶发,应引起注意并加以鉴别.     

Primary osteosarcoma of the skull. A report of 3 cases

Osteosarcomas are malignant bone tumors, which commonly affect the long bones of young adults. Primary osteosarcomas of the skull are exceedingly rare. We herein report 3 cases of primary osteosarcoma of the skull involving the calvaria, diagnosed over a period of 8 years at the Department of Pathology of our Institute.     

Melanotic progonoma of temporal and occipital bones: A case report

Melanotic progonoma is a rare tumor that primarily affects the maxilla of infants during the first year of life. Involvement in the skull is rare and can mimick other benign or malignant tumors affecting the infant's skull. The authors report a case of melanotic progonoma of right occipital and temporal bones in a 7-months’ girl and discuss the histological features, immunohistochemistry study, differential diagnosis and management of this tumor.