• The Journal of Korean Orthopaedic Ultrasound Society
• /
• v.5 no.2
• /
• pp.102-105
• /
• 2012

Schwannoma is a common peripheral nerve tumor that mainly occur at head and neck, flexor muscle of upper, and lower extrimity. In posterior tibial nerve schwannoma, diagnosis is difficult, since physicians often consider achilles tendinitis, posterior impingement syndrome, retrocalcaneal bursitis, or injury of the flexor tendons, as the primary cause in patients with posterior ankle pain. Ultrasonogram may be a simple tool to differentiate such various diseases. The authors report a case of posterior tibial nerve schwannoma diagnosed with ultrasonogram, which was initially misunderstood as achilles tendinitis.

• The Journal of the Korean bone and joint tumor society
• /
• v.3 no.1
• /
• pp.26-31
• /
• 1997

One of the most common benign tumors of bone is the osteochondroma which is a cartilage-capped bony projection on the surface of a bone. It may occur in any bone that has been performed from cartilage, but the most common locations are the long bone at the metaphyseal region of the most active growth cartilage, that is, the lower end of femur, the upper end of the tibia, and the upper end of the humerus. Other bones often involved are the ilium, scapula, fibula, and phalanges of hands and feet. But, the vertebral column is very rare location for osteochondroma. Only one case of osteochondroma involving the lumbar spine has been previously reported in Korea. We report an unusual case of osteochondroma arising from the left lamina and inferior articular process of the 3rd lumbar spine causing spinal cord compression.

• The Journal of the Korean bone and joint tumor society
• /
• v.4 no.2
• /
• pp.99-102
• /
• 1998

Sarcoidosis is a multi systemic granulomatous disease of unknown etiology and pathogenesis. The granulomas are non-caseating, and the organs that are affected most frequently are the lungs, the skin, and the eyes. However it may also involve the liver, spleen, bone, nervous system, and other organs. The diagnosis is based on the identification of noncaseating granuloma in the tissues involved, excluding other granulomatous conditions. The diagnosis of sarcoid joint disease is often made in retrospect and only when the lung or eye is involved. We report a case of sarcoid synovitis in knee joint with review of literature.

• The Journal of the Korean bone and joint tumor society
• /
• v.20 no.2
• /
• pp.94-98
• /
• 2014

Osteoid osteoma can occur in all parts of the skeletal system. More than half occur in lower extremity and rare in wrist. Clinically pain is almost the only symptom worse at night and which is characterized by a rapid improvement by NSAID. We report the cases of osteoid osteoma which shows the characteristic symptoms and got a good results with appropriate imaging work up and surgical treatment.

• Clinics in Shoulder and Elbow
• /
• v.15 no.2
• /
• pp.138-142
• /
• 2012

Pigmented villonodular synovitis (PVNS) is a rare benign proliferative disorder that results in villous hyperplasia and nodule formation in the synovium, tendon sheath and bursa. That most commonly affects the knee and the hip joint in adult. PVNS of the hand, the wrist, the shoulder and the elbow is rare and that of the elbow in children is particularly rarer. An eight-year-old boy had his left elbow pain and a lesion like benign bone tumor in the left fossa olecrani on plain x-ray. During the operation, abnormal synovial hyperplasia in his left elbow joint led us to diagnose PVNS. Therefore, open curettage of the lesion and radical synovectomy was performed. The specimen of the synovectomized tissue revealed PVNS. The left elbow pain subsided after the operation and the child restored a full range of motion of his left elbow. We reported this rare case of PVNS in a child's elbow joint mimicking the bone tumor together with a review of the literature.

• The Journal of the Korean bone and joint tumor society
• /
• v.17 no.2
• /
• pp.79-86
• /
• 2011

Purpose: Modular tumor prosthesis is the most popular recontructive modality after resection of malignat tumor in extremity. Complications and survival of tumor prosthesis reconstruction are well-known. however, reports on the long-term outcome of tumor prosthesis in osteosarcoma patientss are scarece. Materials and Methods: In 158 cases as diagnosed as osteosarcoma from feburary 1989 to December 2006 in a single cancer center. We retrospectively reviewd 48 osteosarcoma patients who under went tumor prosthetic reconstruction. Mean follow up preiod was 75.6 months (range; 60 to 179 months). There were 28 males, 20 females and mean age was 22.4 years (range; 11-71). Pathologic subtypes were conventional central osteosarcoma in 46 cases and periosteal in 2 cases. The location of the tumor was proximal tibia (26 cases), distal femor (20 cases), femor diaphysis (1 case), and tibia diaphysis (1 case). In 41 cases built-up-type tumor prosthesis have been used and 7 cases expansion-type tumor prosthesis have been used. We used Musculoskeletal tumor society (MSTS) grading system to asses post operation function, and we analyzed survival rate of patient and tumor prosthesis and complication. Results: The overall survival rate was 77.7% and disease free survival rate was 68.9%. The survival rate of tumor prosthesis was 73%, in last follow up tumor prosthesis has been removed in 12 cases. All of them, 17 complications occurred, which included infection in 16 cases, Periprosthetic Fracture and Loosening of tumor prosthesis in 4 cases, articular instability in 4 cases. MSTS functional score was 74.1% in post operation. Conclusion: In long term follow up result, Primary tumor prosthesis -a reconstruction method after a wide extensional resecion of a bone tumor- can be a effective treatment method in asepect of survival rate, functional assesment and complication.

• Clinics in Shoulder and Elbow
• /
• v.14 no.2
• /
• pp.242-247
• /
• 2011

Purpose: We present an atypical case of calcific tendinitis of the shoulder with intraosseous loculation. Materials and Methods: A 59 year-old female complained of acute exacerbation of chronic left shoulder pain and restricted range of motion. Simple radiographs showed a subacromial calcific deposit and magnetic resonance imaging revealed cortical erosion with intraosseous extension of calcific material mimicking infection or tumor. She was managed with arthroscopic excision of the calcific deposit, curettage of the intraosseous lesion and subsequent rotator cuff repair with a suture anchor. Results: Her acute pain promptly subsided. Her rehabilitation was uneventful and she gained full range of motion. Radiographs five months after the operation showed no recurrence of calcific material. Conclusion: Calcific tendinitis of the shoulder can present with a variety of images involving the adjacent bone. The correct recognition of this disorder may avoid unnecessary investigation and treatment.

• The Journal of the Korean bone and joint tumor society
• /
• v.7 no.4
• /
• pp.151-156
• /
• 2001

The reported incidence of osteosarcoma of the foot varies between 0.2-2% of all osteosarcoma. Low grade osteosarcoma of the long bone represents only 1.9% of all osteosarcoma. A 38-year-old female had suffered painful mass in the proximal phalanx of the second toe for 1 year. Radiographic finding showed enlarged osteloytic mass which had penetrated thin cortex of the second toe and apparent increased uptake in bone scan was seen. Mass resection with autogenous bone graft using rib was performed. Histologically, the tumor was compatible with "low grade osteosarcoma". Second stage wide resection was performed. Because low grade osteosarcoma located in the proximal phalanx of the second toe is very rare, we report this unusual case with review of literature.

• The Journal of the Korean bone and joint tumor society
• /
• v.11 no.2
• /
• pp.194-198
• /
• 2005

Chondroblastoma is relatively rare benign neoplasm with predilection for the epiphysis of long bones. Benign chondroblastomas of bone compromise approximately 1% of benign bone tumors in several reported series. Chondroblastoma in the carpus is extremely rare in english literature. We report the case of a chonroblastoma in the carpal scaphoid.

• The Journal of the Korean bone and joint tumor society
• /
• v.15 no.2
• /
• pp.178-183
• /
• 2009

Angiosarcoma is a very rare disease of soft tissue sarcoma, and angiosarcoma arising in a region of chronic lymphedema is referred to as Stewart-Treves syndrome. it typically occurs in postmastectomy lymphedema of the arm and sporadically in a lymphedematous leg. The prognosis, even with wide surgical excision and subsequent radiotherapy, is poor. The authors experienced a case of angiosarcoma in a chronically lymphedematous leg which had undergone hysterectomy due to cervical cancer 17 years ago and lymphedema of leg persists for about 16 years. We report a case of angiosarcoma with a brief review of the literature.