• Journal of the Korean Orthopaedic Association
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• v.54 no.1
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• pp.84-89
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• 2019

Schwannomas are benign neoplasms with a Schwann cell origin. A plexiform schwannoma is a rare variant of a schwannoma with a plexiform or multinodular growth pattern. The condition occurs mostly as a solitary lesion in the skin or subcutaneous tissue, or uncommonly located in the deep soft tissue. We report a rare case of recurred multiple plexiform schwannomas arising from the posterior tibial nerve and its branch, which was located in a deep anatomic location and accompanied by a bony deformity.

• The Journal of the Korean bone and joint tumor society
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• v.11 no.1
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• pp.82-87
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• 2005

Both neurilemmoma and neurofibroma are originated from Schwann cell. Plexiform tumor was mostly neurofibroma but Neurilemmoma which has plexiform is extremely rare. So it is important to differentiate plexiform neurilemmoma from plexiform neurofibroma, because plexiform neurilemmoma appears to have neither a significant association with neurofibromatosis nor a propensity for malignant transformation. We report two cases of plexiform neurilemmoma involving the left arm and right foot.

• Journal of Chest Surgery
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• v.41 no.1
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• pp.120-123
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• 2008

A 60-year-old man with a history of gunshot vascular injury on the right inguinal area, and this happened in the military service 40 years ago, was admitted to our hospital with claudication and dyspnea on exertion. The patient was diagnosed with a chronic traumatic femoral arteriovenous fistula. The patient underwent a successful operation for arteriovenous fistula closure with bovine pericardium and for femoropopliteal bypass with using a right greater saphenous vein graft. The patient is well at 14 months after the operation.

• Investigative Magnetic Resonance Imaging
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• v.15 no.2
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• pp.170-175
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• 2011

Ancient schwannoma is a rare variant of schwannoma and a slow growing benign tumor associated with degeneration that may be diagnosed as a malignant tumor, because it presents with a large size and an inhomogeneous signal intensity. The main differential diagnosis of plexiform soft tissue tumor includes plexiform neurofibroma, malignant peripheral nerve sheath tumor (MPNST). In this case, we describe the MRI findings in a case of ancient schwannoma involving left thigh of a 63-year-old woman mimicking a plexiform MPNST. The tumor appeared as an inhomogeneous signal intensity and multinodular appearance, causing misdiagnosis as a plexiform MPNST.

• Journal of Veterinary Clinics
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• v.32 no.2
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• pp.187-190
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• 2015

An 18-month-old female spayed domestic short-haired cat, weighing 4.1 kg, was presented as an emergency case after it suffered a gunshot injury. Physical examination of the cat revealed paraplegia, with loss of deep nociception. A bullet (diameter, 3 mm) lodged in the left epaxial muscle at the level of the first lumbar (L1) was observed on radiographic examination, and a hyperattenuating spot in the spinal canal was confirmed using computed tomography. Exploratory laminectomy was performed, and an incomplete fracture of the right caudal articular process of L1 and a necrotizing spinal cord lesion were found. The animal was euthanized and necropsy was performed, which revealed a crack on the left pedicle of L1. This case report presents the first detailed clinical description of a gunshot injury to the spinal cord in a cat.

• Journal of the Society of Disaster Information
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• v.14 no.1
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• pp.101-106
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• 2018

The ROK military conluded that the dead of a young soldier, walking back to his unit was caused by a ricochet after carrying our some construction work near firing range in Gangwon Province in last Septemebr. But when it was revealed that he was hit by a stray bullet cause, this fact caused public fury. To solve these problems, we will analyze the individual fire shooting range of our military units from a safe perspective and propose ways to improve it by applying the cases of the United States, which are both permanent and scientific.

• Tuberculosis and Respiratory Diseases
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• v.47 no.2
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• pp.150-160
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• 1999

Background: The CREST syndrome is an indolent form of progressive systemic sclerosis. Although its clinical progress is indolent, pulmonary hypertension(PH) associated with CREST syndrome have grave prognosis with over 40 percent mortality rate at 2 year follow-up. But the pathogenesis of pulmonary hypertension in this disease is not known, and classified as either primary or secondary PH. Clonality of endothelial cell proliferation in plexiform lesion is a molecular marker which allows distinction between primary and secondary PH. We performed this study to know whether the PH associated with CREST syndrome is a variant of primary PH or is a secondary PH. Methods: We assessed the X-chromosome inactivation based on the methylation pattern of the human androgen-receptor gene by PCR(HUMARA). Endothelial cells in plexiform lesions from female patients(n=3) with PH associated with CREST syndrome were microdissected from paraffin blocks. Vascular smooth muscle cells and lung parenchyma were also microdissected for clonality studies. Results: The proliferating endothelial cells in 14 plexiform lesions were all polyclonal. Similarly proliferated smooth muscle cells from 5 vessels with medial hypertrophy were also polyclonal. Conclusion: These results suggest that the pulmonary hypertension associated with CREST syndrome has different pathogenesis from primary PH and to be classified as secondary PH.

• Clinics in Shoulder and Elbow
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• v.15 no.1
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• pp.37-42
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• 2012

Purpose: To consider the proper management of proximal humerus fracture on gunshot wounds. Materials and Methods: A 28-year-old male patient, who sustained a gunshot injury on the left arm 5 days ago, was admitted through the emergency department. Although he underwent an emergency surgery (bullet fragment removal and debridement), there remained bullet fragments around the proximal humerus fracture site. The wound seemed to be infected and a partial dehiscence occurred. No neurologic deficit was noted. Immediate exploration and debridement were performed, and an external fixator was applied to restore the anatomical alignment and manage the wounds. Intravenous antibiotics were administered. On the 9th postoperative day, wound debridement was done again, and cement beads mixed with antibiotics were inserted. After two weeks, the external fixator was removed, and the pin sites were closed after debridement. One week later, the open reduction and internal fixation with locking compression plate and screws were done. Result: At 3 months after the internal fixation, the bone union was obtained with satisfactory alignment of the humerus. Conclusion: The severity of the soft tissue injury influences the fracture management plan. Further, the risk on lead toxicity should be considered.

• Journal of Chest Surgery
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• v.22 no.2
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• pp.342-347
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• 1989

A 4-year-old male developed the esophageal perforation after air-gun shut injury in the thorax. The esophageal perforation was found on esophagogram at the next day after the accident. Because of delayed diagnosis, mediastinitis and pyopneumothorax were developed. The general conditions of the patient were very critical with sepsis on admission. Therefore, two staged operation was planned. At the first stage, exclusion and diversion of the esophagus was carried out to treat chemical pneumonitis due to gastric contents through the esophago-bronchial fistula by gastroesophageal reflux. Clinical conditions of the patient were improved after the first stage operation. At the second stage, the esophageal reconstruction with right colon was performed.

• The Journal of Korean Academy of Prosthodontics
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• v.55 no.2
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• pp.198-204
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• 2017

Maxillofacial defect comes from congenital defect, trauma and surgical resection. Patients with intraoral defect are commonly related to maxillary defect and they need prosthetic rehabilitation. Functional reconstruction of partially edentulous mandible has many limitations. However, if both condyles are intact, maxillofacial prosthesis using partial denture give competent results. In this case, a patient of 58 year-old male has a defect on palate and left mandibular posterior teeth from gunshot. The maxillary defect of this patient is Class IV according to Aramany classification and the mandibular one is Type V according to Cantor and Curtis classification. For retention of the obturator, remaining teeth are fully utilized and artificial teeth are arranged harmoniously to provide stable occlusion. Mandibular RPD covered limited range of deformed soft tissue derived from mandibular resection surgery. With these treatments, the patient in this case showed improvements in mastication, swallowing and speech.