• Journal of Korean Neurosurgical Society
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• v.49 no.1
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• pp.53-57
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• 2011

We reported a unique case of posttraumatic giant infratentorial extradural intradiploic epidermoid cyst. A 54-year-old male, with a previous history of an open scalp injury and underlying linear skull fracture in the left occipital region in childhood, presented with a painful subcutaneous swelling, which had been developed gradually in the same region and moderate headache, nausea, vomiting and cerebellar ataxia. The duration of symptoms on admission was 3 months. Imaging studies revealed occipital bone destruction and giant extradural intradiploic lesion. The preoperative diagnosis was giant infratentorial extradural intradiploic epidermoid cyst. Surgery achieved total removal of the lesion, which was histologically confirmed and the postoperative course was uneventful. To our knowledge, this is the first case of giant infratentorial extradural intradiploic epidermoid cyst with a traumatic etiology described in the literature.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.17 no.4
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• pp.438-441
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• 1995

Chondrosarcoma is a rare malignant neoplasm which constitutes approximately 10% of all primary malignant bone tumors. It occurs most often in the pelvis, femur, rib and humerus and the involvement of the jaw is rare, and what is more, chondrosarcoma arising in the condyle is extremely rare and only a few cases were previously reported and there is no domestic report. We report a chondrosarcoma of a condyle presenting as a painful swelling on the left preauricular area.

• Journal of Korean Foot and Ankle Society
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• v.17 no.1
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• pp.60-63
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• 2013

Small osteophytes are frequently encountered in the foot and ankle, and not to be confused with true osteochondromas, which are relatively uncommon in this region. Osteochondromas are the most common benign osseous neoplasm, occurs in the metaphysis of the long bone. It is rarely found in bones of the foot. Treatment of the osteochondroma is usually conservative, unless symptoms usually pain, are progressive rapid growth, and malignant transformation is suspected. We experienced a rare case of hallux rigidus with osteochondroma of the hallucal proximal phalanx which cause pain and corn of the plantar.

• Journal of Chest Surgery
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• v.45 no.4
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• pp.269-271
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• 2012

Solitary plasmacytoma of the bone, and especially of a single rib, is a rare disease. Here we report a 73-year old male patient complaining of continuous chest wall pain around the right 5th rib shaft who underwent a wide excision of the rib tumor with surrounding connective tissue. He was diagnosed with solitary plasmacytoma and will undergo radiation therapy. We report this case with a review of the literature.

• Imaging Science in Dentistry
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• v.32 no.4
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• pp.231-234
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• 2002

The odontogenic myxoma is an infiltrative benign tumor of bone that occurs almost exclusively in the jaw bones and comprises 3% to 6% of odontogenic tumors. This neoplasm is thought to arise from the primitive mesenchymal structures of a developing tooth, including the dental follicle, dental papilla, or periodontal ligament. Radiographically the odontogenic myxoma may produce several patterns: unicystic, multilocular, pericoronal, and radiolucent-radiopaque, making the differential diagnosis difficult. In this report, two cases of the odontogenic myxoma in the jaw bones are presented. The first case involved only the mandible, while the second case involved the maxilla. Both cases presented extensive multilocular radiolucencies characteristic of odontogenic myxoma.

• Journal of Korean Academy of Oral and Maxillofacial Radiology
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• v.28 no.1
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• pp.299-309
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• 1998

This case was diagnosed as multiple cementoosseous dysplasia on the basis of clinical & radiological features but was diagnosed as ossifying fibroma on the basis of histopathological feature. The histopathologic features of the multiple cementoosseous dysplasia and cementoossifying fibroma have common features of cementum, fibrous network and bone. Multiple cementoosseous dysplasia is reactive lesion and shows restricted lesion size, occurred on anterior and posterior tooth of the mandible and needs no treatement except periodic follow up. But Cementoossifying fibroma is the true neoplasm and grows continuously and needs surgical removal. The final diagnosis of the multiple cementoosseous dysplasia requires good correlation of the clinical, histopathological, and radiological features.

• The Journal of the Korean bone and joint tumor society
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• v.15 no.1
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• pp.75-80
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• 2009

Extramedullary plasmacytoma is extremely rare, constitute 3 to 5 % of plasma cell malignancies and commonly occur in the upper aerodigestive tract. Several case studies of extramedullary plasmacytoma occurring in unusual location are reported; stomach, bladder, central nervous system, breast, thyroid, testis, salivary gland and skin. Here, we present a case of an extramedullary plasmacytoma of the right gluteus maximus muscle in a 49-year-old man.

• Journal of Korean Neurosurgical Society
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• v.60 no.1
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• pp.94-97
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• 2017

Gastrointestinal stromal tumors (GISTs) are rare, but are the most common mesenchymal neoplasm of the gastrointestinal tract. The most common sites of metastasis are liver and peritoneum, while bone metastasis is rare. We report on a patient with skull metastasis after seven years of treatment with imatinib for metastatic GIST. She underwent metastasectomy consisting of craniectomy with excision of the mass, and cranioplasty and continued treatment with imatinib and sunitinib, without evidence of cranial recurrence. She died of pneumonia sepsis one year after metastasectomy. Skull metastasis of GIST is a very rare presentation, and an aggressive multidisciplinary approach should be considered whenever possible.

• Journal of Chest Surgery
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• v.52 no.4
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• pp.243-246
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• 2019

Extraskeletal osteosarcoma (ESOS) is a malignant soft tissue neoplasm producing osteoid, without any continuity with the bone or periosteum. Primary ESOS presenting in the mediastinum is an extremely rare, yet aggressive malignant tumor associated with a poor prognosis. We report a case of primary ESOS arising from the thymus in a 63-year-old male patient.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.47 no.6
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• pp.471-475
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• 2021

Solitary plasmacytoma (SP) is an uncommon form of plasma cell neoplasm occurring intraosseously or in soft tissue and presents as a single mass of monoclonal plasma cells. SP in the maxillary sinus is rare and can be misdiagnosed as other maxillary sinus tumors. The essential examinations in patients with the initial diagnosis of plasmacytoma are bone marrow biopsy, serum and urine electrophoresis, and kappa/lambda ratio (κ:λ ratio) to rule out multiple myeloma (MM). Herein, a rare case of SP in the maxillary sinus treated by surgery and localized radiation is reported. At the 10-year follow-up examination, local recurrence or disseminated development of MM were not evident.