Intramuscular myxoma is a rare benign myxoid tumor that is difficult to differentiate from other benign soft tissue tumors and sarcoma, and as a result, intramuscular myxoma is commonly misdiagnosed as another type of soft tissue tumor. Accordingly, awareness of the existence of this condition is a fundamental requirement for treatment decision-making. Furthermore, although intramuscular myxoma appears grossly to be well-circumscribed, it can infiltrate adjacent soft tissue microscopically. Tumor resection is the recommended treatment, but appropriate surgical margin sizes remain controversial. To the best of our knowledge, this is the first South Korean report to be issued on the treatment of intramuscular myxoma of the foot.

Background/Aims: Narrow band imaging provides an accurate diagnosis of colonic polyps.However, these diagnostic modalities are not used as standard endoscopic tools in most institutions. This study aims to investigate whether the chicken skin mucosa (CSM) surrounding the colon polyp yields additional information about colorectal polyps, including histological differentiation of neoplastic and non-neoplastic polyps, under conventional white light colonoscopy. Methods: This study prospectively observed 173 patients who underwent endoscopic polypectomy and reviewed the clinical data and pathologic reports of 313 polyps from a university hospital. Two endoscopists each performed colonoscopy and polypectomy and assessed the CSM. The association between CSM surrounding colorectal polyps and histology was analyzed. Results: The majority (91.3%) of CSM-positive polyps were neoplastic (sensitivity, 37.90%;specificity, 86.15%; p<0.001). In logistic regression, the neoplastic polyps were associated with positive CSM (adjusted odds ratio [OR], 3.51; 95% confidence interval [CI], 1.45 to 9.25; p=0.007), protruded polyps (adjusted OR, 4.85; 95% CI, 1.65 to 17.23; p=0.008), and neoplastic histology–associated pit pattern (pit III, IV, and V) (adjusted OR, 10.14; 95% CI, 4.85 to 22.12; p=0.000). Furthermore, advanced adenomas were associated with positive CSM (adjusted OR, 5.64; 95% CI, 1.77 to 20.28; p=0.005), protruded polyps (adjusted OR, 3.30; 95% CI, 1.15 to 9.74; p= 0.026), and ≥10 cm polyp size (adjusted OR, 18.56; 95% CI, 3.89 to 147.01; p=0.001). Conclusions Neoplastic and advanced polyps were associated with CSM-positive polyps.These findings suggest that CSM is a useful marker in differentiating neoplastic polyps and advanced polyps under conventional white colonoscopy.

This study aimed to analyze the errors and their causes in inappropriately completed death certificates, and to suggest improvement measures. The death certificate is an important medical document that proves the cause and manner of death. However, a death certificate is not as valuable as a medical document, since many death certificates are inappropriately completed and thus provide inaccurate information. We reviewed 307 death certificates issued by the Emergency Room of Chung Nam National University Hospital between January 1, 2015, and November 31, 2016, and compared their details with the cause and manner of death in the patients' medical records. Among various errors, the most common was “omission of other significant information not related to the cause of death” (184 cases). On 29 death certificates, the mechanism of death was recorded instead of the cause of death. When comparing death certificates and medical records, discrepancies in the cause and manner of death were found in 13 (4.2%) and 17 (5.5%) cases respectively. Although the contents of a death certificate may vary according to a physician's point of view, multiple errors on death certificates should be avoided, and we suggest necessary improvement measures.
Cause of Death ; Death Certificates* ; Emergencies* ; Emergency Service, Hospital* ; Medical Records

Spindle cell carcinoma (SpCC) of the lung is extremely rare, with an incidence of less than 0.5% among all lung malignancies. Neuroendocrine tumors are frequently associated with secondary primary malignancies. Here, we report a case of metachronous SpCC that occurred after treatment of a primary carcinoid tumor of the lung. The SpCC mass was successfully removed by lobectomy. In immunohistochemical analyses, the tissues were positive for cytokeratin 7 and vimentin.
Carcinoid Tumor* ; Incidence ; Keratin-7 ; Lung* ; Neuroendocrine Tumors ; Vimentin

OBJECTIVE: To investigate the clinical characteristics of patients involved in road traffic accidents according to the New Injury Severity Score (NISS). METHODS: In this study, medical records of 1,048 patients admitted at three hospitals located in different regions between January and December 2014 were retrospectively reviewed. Only patients who received inpatient treatments covered by automobile insurance during the period were included. Accidents were classified as pedestrian, driver, passenger, motorcycle, or bicycle; and the severity of injury was assessed by the NISS. RESULTS: The proportion of pedestrian traffic accident (TA) was the highest, followed by driver, passenger, motorcycle and bicycle TA. The mean NISS was significantly higher in pedestrian and motorcycle TAs and lower in passenger TA. Analysis of differences in mean hospital length of stay (HLS) according to NISS injury severity revealed 4.97±4.86 days in the minor injury group, 8.91±5.93 days in the moderate injury group, 15.46±11.16 days in the serious injury group, 24.73±17.03 days in the severe injury group, and 30.86±34.03 days in the critical injury group (p<0.05). CONCLUSION: The study results indicated that higher NISS correlated to longer HLS, fewer home discharges, and increasing mortality. Specialized hospitals for TA patient rehabilitation are necessary to reduce disabilities in TA patients.
Accidents, Traffic* ; Automobiles ; Humans ; Injury Severity Score* ; Inpatients ; Insurance ; Length of Stay ; Medical Records ; Mortality ; Motorcycles ; Rehabilitation ; Retrospective Studies

Paratracheal air cysts are a rare entity in which cystic formation occurs adjacent to the trachea. Most patients with paratracheal air cysts are asymptomatic, and the cysts are detected incidentally on chest radiograph or computed tomography (CT) scan. Most symptomatic patients complain of pulmonary symptoms or repeated respiratory infection. Rarely, the air cysts can lead to paralysis of the recurrent laryngeal nerve as a result of direct compression. We report a case of a 59-year-old male patient who presented with voice change, and the cause was identified as paratracheal air cysts on a chest CT scan. Surgical resection via video-assisted mediastinoscopy was performed, and the voice recovered immediately after the operation.
Diverticulum ; Humans ; Male ; Mediastinoscopy ; Middle Aged ; Paralysis ; Radiography, Thoracic ; Recurrent Laryngeal Nerve ; Tomography, X-Ray Computed ; Trachea ; Voice*

The first author of the article has duely admitted that he is mainly responsible for the misconduct.

Although pulmonary artery angiosarcoma is rare, it can be misdiagnosed as pulmonary embolism because of its similar clinical and diagnostic features. The diagnosis is often delayed and the misdiagnosis brings unnecessary treatment. Because we made a wrong diagnosis of pulmonary artery angiosarcoma as an acute pulmonary embolism, we did thrombolytic therapy which could be dangerous to the patient. In this case report, we focused on the clinical and echocardiographic features of pulmonary artery angiosarcoma which can be used in differentiating the diagnosis from pulmonary embolism.
Diagnosis ; Diagnostic Errors ; Echocardiography* ; Hemangiosarcoma* ; Humans ; Pulmonary Artery* ; Pulmonary Embolism* ; Thrombolytic Therapy

Adult ; Antitubercular Agents ; adverse effects ; Humans ; Isoniazid ; adverse effects ; Male ; Pulmonary Fibrosis ; chemically induced ; diagnosis