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Copyright of Journal of the Korean Society of Radiology (2951-0805) is the property of Korean Society of Radiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Spinal epidermoid cysts are extremely rare benign tumors and can be congenital or acquired. Acquired spinal epidermoid cysts are found in the lumbosacral region. To our knowledge, no case of epidermoid cyst related to spinal cord stimulator insertion has yet been reported. We report the MRI findings of a rare case of thoracic intradural epidermoid cyst acquired after spinal cord stimulator insertion in a 50-year-old female. [ABSTRACT FROM AUTHOR]

Purpose Contrast media extravasation (CME) is an adverse reaction after administration of contrast media during CT examinations. The purpose of this study was to evaluate the frequency, management, and outcomes of extravasations and to assess the risk factors for CME in the emergency department (ED) and the ward. Materials and Methods This retrospective study was conducted at a single academic urban hospital from January 2013 to December 2015. We analyzed the medical records of all patients who experienced CME after undergoing a CT scan. We compared the patients’ age, sex, underlying disease, injection site, injection flow rate, time of CT examination, type of CT examination, and severity of injury between those in the ED and the ward. Results CME occurred in 41 (0.36%) of 114767 patients, which included 16 (0.34%) in the ED and 25 (0.37%) in the ward. Both groups were more frequent in those aged older than 60 years and in female. Additionally, the abdominopelvic CT type and 2–3 mL/s as the injection rate were more common in both groups. However, CME was more frequent during the nighttime (10, 62.5%) in the ER, while it was more common in the daytime (14, 56.0%) in the ward. Severe complications were more frequent in the ER (9, 56.3%) compared with the ward (8, 32.8%). There were no significant differences in CME between the ED and the ward. When comparing the clinical manifestations in the mild and severe groups, the antecubital fossa (33.3% and 0%, respectively; p = 0.013) for the injection site and abdominopelvic CT (41.7% and 82.4%, respectively; p = 0.012) and CT angiography (41.7% and 5.87%, respectively; p = 0.014) for the CT examination showed significant differences between the mild and severe groups. Conclusion In this study, there were no significant clinical differences in CME between the ED and ward. Thus, prevention is more important than the place of admission. Radiologists and emergency physicians should pay attention to CME in the ED because it frequently occurs at night and results in more severe complications. [ABSTRACT FROM AUTHOR]

A 52-year-old male complained of a painless, firm, and slow-growing mass in his right breast outer portion. The chest CT revealed a 3.3 cm-sized oval shaped, microlobulated, mild enhancing mass. Ultrasound showed a microlobulated marginated heterogeneous hypoechoic mass with internal vascularity and calcifications in the mass. On the ultrasound-guided core needle biopsy, the mass was confirmed as a benign granular cell tumor (GCT). The patient transferred to another hospital and underwent surgical removal of the lesion. GCT of the breast is uncommon and mostly benign neoplasm to originate from Schwann cell. Clinical and radiologic features of GCTs, including CT and ultrasound images, mimic malignancy and make diagnosis of GCT more difficult. The CT images of GCTs are much rarely reported. Physicians and radiologists must be aware of radiologic characteristics of this rare benign tumor for male breast, to avoid misdiagnosis this tumor for breast malignancy and overtreat. [ABSTRACT FROM AUTHOR]

In 2014, the American College of Radiology announced a guideline for appropriate diagnostic approach and treatment in patients with hemoptysis, according to severity of hemoptysis and risk of lung cancer. However, in Korea many patients have pulmonary fibrosis due to previous tuberculosis or have active tuberculosis. Therefore, application of this guideline is not appropriate. The Korean Society of Radiology and Korean Society of Thoracic Radiology proposed a guideline more closely matching the real state of diagnostic approach and treatment of patients with hemoptysis in Korea. The guideline was prepared in consensus by a development committee, working party, and an advisory committee. The process of the guideline proposal was based on methodology for developing evidence-based clinical imaging guidelines: joint recommendations by the Korean Society of Radiology and National Evidence-Based Healthcare Collaborating Agency. The clinical imaging guideline for adult patients with hemoptysis is as follows. Chest radiography is an initial imaging modality to evaluate hemoptysis. Contrast enhanced chest CT is recommended in patients with two lung cancer risks (> 40 years old and > 30 packs per year smoking history), moderate hemoptysis (> 30 cc/24 hours) or recurrent hemoptysis. Contrast enhanced chest CT is also recommended for patients with massive hemoptysis (> 400 mL/24 hours) without cardiopulmonary compromise. [ABSTRACT FROM AUTHOR]

Partial anomalous pulmonary venous return is a rare congenital pulmonary venous anomaly, in which some of the pulmonary veins drain into the systemic circulation rather than the left atrium. Many variants of partial anomalous pulmonary venous return have been reported. We present a rare type of partial anomalous pulmonary venous return in which the anomalous left upper lobe pulmonary vein drained into the left innominate vein via the vertical vein, accompanying the left upper lobe pulmonary vein in the normal location. [ABSTRACT FROM AUTHOR]

Multiple solitary plasmacytoma is very rare disease, which occurs in multiple sites of soft tissue, bone or both without multiple myeloma. Almost 80-90% of extramedullary plasmacytomas develop in the head and neck area. Involvement of the mediastinum is extremely rare. A few cases of mediastinal plasmacytoma have been reported, and to the best of our knowledge, there is only one previous report of multiple plasmacytomas involving the posterior mediastinum. Herein, we describe an unusual case of multiple solitary plasmacytomas in a 67-year-old male involving the posterior mediastinum and sternum without evidence of bone marrow involvement. [ABSTRACT FROM AUTHOR]

Giant cell reparative granuloma is a benign reactive process following intraosseous hemorrhage rather than a true tumor. This lesion most commonly affects the maxilla and mandible, followed by phalanges, hands, and feet. Local invasion of surrounding soft tissue is a typical feature of giant cell reparative granuloma in the bones of the upper and lower limbs. We present the rare case of giant cell reparative granuloma arising from soft tissue of the foot without erosion or engulfing of the adjacent bone. [ABSTRACT FROM AUTHOR]

Intestinal lipomatosis is an extremely rare disease that is characterized by numerous lipomas of the intestine. This condition is usually asymptomatic, but clinical presentation is determined by intussusceptions, volvulus, or ulceration. We report a case of intestinal lipomatosis of the jejunum with volvulus and describe the characteristic computed tomography findings that were used to make a preoperative diagnosis. [ABSTRACT FROM AUTHOR]