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1.
Journal of the Korean Radiological Society ; : 230-238, 2022.
Article in English | WPRIM | ID: wpr-916900

ABSTRACT

Polyacrylamide gel (PAAG) has been used for augmentation mammoplasty in certain countries, such as China or Eastern European countries. However, owing to various complications, its use is currently banned in most countries. Nevertheless, because of the migratory stream of female from these countries, we also encounter patients with PAAG mammoplasty in Korea. Owing to the various imaging features of PAAG mammoplasty, it may interfere with the identification of malignancy or other pathologic conditions. Therefore, it is important to identify the imaging findings related to PAAG mammoplasty. However, there is limited literature on the radiologic findings of complications related to PAAG mammoplasty in Korea. Herein we report four cases of PAAG mammoplasty, the complications faced, and depict various radiologic features through multimodality imaging.

2.
Journal of the Korean Radiological Society ; : 212-217, 2022.
Article in English | WPRIM | ID: wpr-916890

ABSTRACT

An epidermoid cyst is a benign tumor found anywhere in the body. However, the occurrence of epidermoid cysts in the thymus is extremely rare, with only six cases reported worldwide. The correct diagnosis of thymic epidermoid cysts is often difficult due to the unusual location and nonspecific imaging findings. Herein, we present a case of a thymic epidermoid cyst in a 37-year-old female with clinical information and chest CT findings. Further, we have reviewed previous literature reports describing imaging findings of thymic epidermoid cysts.

3.
Journal of the Korean Radiological Society ; : 705-711, 2022.
Article in English | WPRIM | ID: wpr-926453

ABSTRACT

A 46-year-old male with alcoholic liver cirrhosis underwent a transjugular intrahepatic portosystemic shunt (TIPS) for refractory ascites. On the 9th day after the procedure, he presented with melena and decreasing hemoglobin levels. Hemobilia due to fistula formation between the right intrahepatic bile duct and right hepatic artery was suspected on computed tomography. Angiography revealed a fistula of the small branches of the hepatic segmental arteries, and right intrahepatic bile duct was confirmed; embolization was successfully performed with a coil for the eighth segmental hepatic artery, a glue-lipiodol mixture for the fifth segmental hepatic artery, and gelfoam slurry for the right anterior hepatic artery. However, 2 days after embolization, the patient died owing to aggravated disseminated intravascular coagulopathy. When gastrointestinal bleeding occurs after TIPS, careful evaluation is immediately required, and hemobilia should be considered.

4.
Journal of the Korean Radiological Society ; : 708-714, 2021.
Article in English | WPRIM | ID: wpr-901358

ABSTRACT

Intussusception and acute appendicitis are common emergency conditions in children. They should be promptly differentiated in pediatric patients presenting with suggestive symptoms.However, both diseases may occur simultaneously. Herein, we present two cases of intussusception of the appendix accompanied with appendicitis.

5.
Journal of the Korean Radiological Society ; : 1018-1023, 2021.
Article in English | WPRIM | ID: wpr-901297

ABSTRACT

A meandering pulmonary vein (MPV) is a rare pulmonary vascular anomaly characterized by an abnormal course of the pulmonary vein draining into the left atrium. We report the case of a 55-year-old female who was diagnosed with a right MPV on pulmonary angiography. Enhanced chest CT revealed a vascular structure with an abnormal course that drained into the right superior pulmonary vein in the right upper lobe, which resembled a pulmonary arteriovenous malformation (AVM). Pulmonary angiography performed to discriminate between an MPV and pulmonary AVM showed no feeding artery, normal parenchymal staining, and drainage to the left atrium via the culprit vessel. Thus, the patient was diagnosed with MPV. When an MPV is difficult to differentiate from other vascular anomalies on enhanced chest CT, pulmonary angiography can be helpful. By recognizing the angiographic findings of an MPV, unnecessary treatment can be prevented.

6.
Journal of the Korean Radiological Society ; : 708-714, 2021.
Article in English | WPRIM | ID: wpr-893654

ABSTRACT

Intussusception and acute appendicitis are common emergency conditions in children. They should be promptly differentiated in pediatric patients presenting with suggestive symptoms.However, both diseases may occur simultaneously. Herein, we present two cases of intussusception of the appendix accompanied with appendicitis.

7.
Journal of the Korean Radiological Society ; : 1018-1023, 2021.
Article in English | WPRIM | ID: wpr-893593

ABSTRACT

A meandering pulmonary vein (MPV) is a rare pulmonary vascular anomaly characterized by an abnormal course of the pulmonary vein draining into the left atrium. We report the case of a 55-year-old female who was diagnosed with a right MPV on pulmonary angiography. Enhanced chest CT revealed a vascular structure with an abnormal course that drained into the right superior pulmonary vein in the right upper lobe, which resembled a pulmonary arteriovenous malformation (AVM). Pulmonary angiography performed to discriminate between an MPV and pulmonary AVM showed no feeding artery, normal parenchymal staining, and drainage to the left atrium via the culprit vessel. Thus, the patient was diagnosed with MPV. When an MPV is difficult to differentiate from other vascular anomalies on enhanced chest CT, pulmonary angiography can be helpful. By recognizing the angiographic findings of an MPV, unnecessary treatment can be prevented.

8.
Journal of the Korean Radiological Society ; : 583-590, 2020.
Article | WPRIM | ID: wpr-832879

ABSTRACT

Coronavirus disease 2019 (COVID-19) is spreading rapidly around the world. Several articles have so far reported on radiological findings of COVID-19 pneumonia. Herein, we present three cases of COVID-19 pneumonia in South Korea, and provide clinical information as well as chest radiograph and chest CT findings.

9.
Journal of the Korean Radiological Society ; : 197-202, 2020.
Article in English | WPRIM | ID: wpr-832796

ABSTRACT

Extrauterine adenomyoma of the liver is extremely rare. Only a few cases have been reported, and these reports have focused mainly on histopathology. Herein, we report the specific imaging findings of extrauterine adenomyoma of the liver in a 43-year-old woman with epigastric pain, which was initially diagnosed as a hepatic adenoma. CT and MRI revealed a solid and cystic mass with hemorrhagic foci and weak persistent enhancement, located in the subcapsular region of the right hepatic lobe.

10.
Journal of the Korean Radiological Society ; : 1265-1270, 2019.
Article in English | WPRIM | ID: wpr-916804

ABSTRACT

Necrotizing fasciitis (NF) is a life-threatening infection characterized by extensive necrosis and inflammation of subcutaneous tissue and the fascia. Only a few cases of NF in the breast have been reported, and imaging findings of primary breast NF have not been described in the literature. As primary NF in the breast is extremely rare, it can be misdiagnosed as an abscess or cellulitis, and its diagnosis may be delayed. However, early diagnosis is crucial because delays can lead to fatal sepsis or requirement for total mastectomy. Herein, the authors report a rare case of primary breast NF that was diagnosed early using enhanced breast CT and successfully managed with local debridement. CT revealed a large cystic mass with an air-fluid level, a thickened deep fascia without remarkable enhancement, and extensive subcutaneous emphysema with subcutaneous fat infiltrations in the right breast.

11.
Journal of the Korean Radiological Society ; : 63-67, 2018.
Article in English | WPRIM | ID: wpr-916615

ABSTRACT

Intercostal schwannomas are uncommon, encapsulated neoplasms that originate in nerve sheaths of intercostal nerves. They account for less than 10% of primary neural tumors of the chest wall. Herein, we report a pathologically confirmed case of intercostal schwannoma with typical magnetic resonance imaging findings.

12.
Journal of the Korean Radiological Society ; : 92-96, 2018.
Article in English | WPRIM | ID: wpr-916611

ABSTRACT

Adenosquamous carcinomas of the duodenum are extremely rare neoplasms in which both glandular and squamous elements demonstrate malignant characteristics. Few cases of adenosquamous carcinoma involving the second or third segment of the duodenum have been reported in the literature. Herein, we report the first case of adenosquamous carcinoma of the bulb of the duodenum that mimicked subepithelial tumor on computed tomography in a 59-year-old man.

13.
Annals of Surgical Treatment and Research ; : 88-97, 2017.
Article in English | WPRIM | ID: wpr-79444

ABSTRACT

PURPOSE: This retrospective study was aimed to determine if appendiceal perforation identified pathologically but not surgically is clinically meaningful. METHODS: The study consists of 2 parts. First, we reviewed 74 studies addressing appendiceal perforation published in 2012 and 2013. Second, in a cross-sectional study, we classified 1,438 adolescents and adults (mean age, 29.3 ± 8.4 years; 785 men) with confirmed appendicitis as “nonperforation” (n = 1,083, group 1), “pathologically-identified perforation” (n = 55, group 2), “surgically-identified perforation” (n = 202, group 3), or “pathologically- and surgically-identified perforation” (n = 98, group 4). The 4 groups were compared for the frequency of laparoscopic appendectomy and the length of hospital stay using multivariable logistic regression analyses. RESULTS: The reference standard for appendiceal perforation was frequently missing or inconsistent in the previous studies. Laparoscopic appendectomies were less frequent in groups 3 (52.5%, P = 0.001) and 4 (65%, P = 0.040) than in group 1 (70.7%), while group 2 (73%, P = 0.125) did not significantly differ from group 1. Median hospital stays were 2.9, 3.0, 5.1, and 6.0 days for groups 1–4, respectively. Prolonged hospital stay (≥3.7 days) was more frequent in groups 3 (77.7%, P < 0.001) and 4 (89%, P < 0.001) than in group 1 (23.4%), while group 2 (35%, P = 0.070) did not significantly differ from group 1. CONCLUSION: We recommend using surgical rather than pathologic findings as the reference standard for the presence of appendiceal perforation in future investigations.


Subject(s)
Adolescent , Adult , Humans , Appendectomy , Appendicitis , Cross-Sectional Studies , Length of Stay , Logistic Models , Pathology , Retrospective Studies
14.
Korean Journal of Radiology ; : 39-46, 2016.
Article in English | WPRIM | ID: wpr-222275

ABSTRACT

OBJECTIVE: To investigate the significance of intra-appendiceal air at CT for the evaluation of appendicitis. MATERIALS AND METHODS: We retrospectively analyzed 458 patients (216 men, 242 women; age range, 18-91 years) who underwent CT for suspected appendicitis. Two independent readers reviewed the CT. Prevalence, amount, and appearance of intra-appendiceal air were assessed and compared between the patients with and without appendicitis. Performance of CT diagnosis was evaluated in two reading strategies: once ignoring appendiceal air (strategy 1), and the other time considering presence of appendiceal air as indicative of no appendicitis in otherwise indeterminate cases (strategy 2), using receiver operating characteristic (ROC) analysis. RESULTS: Of the 458 patients, 102 had confirmed appendicitis. The prevalence of intra-appendiceal air was significantly different between patients with (13.2%) and without (79.8%) appendicitis (p < 0.001). The amount of appendiceal air was significantly lesser in patients having appendicitis as compared with the normal group, for both reader 1 (p = 0.011) and reader 2 (p = 0.002). Stool-like appearance and air-fluid levels were more common in the appendicitis group than in the normal appendix for both readers (p < 0.05). Areas under the ROC curves were not significantly different between strategies 1 and 2 in reader 1 (0.971 vs. 0.985, respectively; p = 0.056), but showed a small difference in reader 2 (0.969 vs. 0.986, respectively; p = 0.042). CONCLUSION: Although significant differences were seen in the prevalence, amount, and appearance of intra-appendiceal air between patients with and without appendicitis, it has a limited incremental value for the diagnosis of acute appendicitis.


Subject(s)
Adolescent , Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Young Adult , Acute Disease , Appendicitis/pathology , Appendix/pathology , Prevalence , ROC Curve , Retrospective Studies , Tomography, X-Ray Computed
15.
Korean Journal of Medicine ; : 177-181, 2016.
Article in Korean | WPRIM | ID: wpr-65761

ABSTRACT

Retroperitoneal fibrosis (RPF) is a rare inflammatory fibrotic condition affecting the peri-aortic retroperitoneum in which fibrosis of the surrounding tissue can encase the ureters, resulting in obstructive uropathy. RPF is generally idiopathic in nature, but may also arise in response to other conditions, such as malignancies, infections, surgery, radiotherapy, or drugs. Idiopathic RPF is commonly seen in association with various autoimmune diseases, such as autoimmune thyroiditis, autoimmune pancreatitis, rheumatoid arthritis, and systemic lupus erythematosus (SLE). Here, we describe the first case of RPF in Korea. A 44-year-old man with SLE presenting with pain in both flanks due to RPF is discussed, along with a review of the relevant literature.


Subject(s)
Adult , Humans , Arthritis, Rheumatoid , Autoimmune Diseases , Fibrosis , Korea , Lupus Erythematosus, Systemic , Pancreatitis , Radiotherapy , Retroperitoneal Fibrosis , Thyroiditis, Autoimmune , Ureter
16.
Korean Journal of Radiology ; : 147-150, 2016.
Article in English | WPRIM | ID: wpr-110202

ABSTRACT

Immunoglobulin G4-related sclerosing disease (IgG4-SD) is currently recognized as a distinct systemic disease involving various organs. We reported the imaging findings of a case of pathologically confirmed IgG4-SD involving bilateral palatine tonsils. CT and MRI showed diffuse enlargement of both palatine tonsils with homogeneous contrast enhancement. Focal contour bulging was noted in the right palatine tonsil. Lesions appeared as isointense on T1-weighted and slightly hyperintense on T2-weighted MRI images, as compared with muscle. The T2-weighted MRI image showed a striated pattern in both tonsils. Despite its rare occurrence, IgG4-SD should be included in the differential diagnoses of patients with symptomatic bilateral tonsillar hypertrophy that is non-responsive to medication.


Subject(s)
Female , Humans , Middle Aged , Diagnosis, Differential , Hypertrophy/pathology , Immunoglobulin G/immunology , Magnetic Resonance Imaging/methods , Palatine Tonsil/pathology , Retrospective Studies , Sclerosis/diagnosis
17.
Journal of Korean Diabetes ; : 315-322, 2015.
Article in Korean | WPRIM | ID: wpr-726845

ABSTRACT

Hepatitis C virus (HCV) mainly affects the liver, but several tissues outside the liver have also been reported to be involved. It has been hypothesized that diabetes could be one of these extrahepatic conditions attributable to HCV infection. The specific mechanisms by which HCV leads to type 2 diabetes are not fully understood, but it seems that an increase in insulin resistance associated with both steatosis and overproduction of proinflammatory cytokines could play a crucial role. We report a patient whose type 2 diabetes that was resolved following interferon-alpha (IFN-alpha) therapy for HCV. A 57-year-old man presented with fatigue, polyuria, and polydipsia. He was newly diagnosed as type 2 diabetes and chronic hepatitis C. He was started on subcutaneous insulin and IFN-alpha. After 24 weeks of treatment with IFN-alpha, the results of HCV polymerase chain reaction were negative, and his diabetes had resolved. Our case shows a resolution of diabetes after IFN-alpha therapy for chronic hepatitis C. Although it is unclear whether the resolution of diabetes in this case occurred as an effect of IFN-alpha or as a result of becoming HCV RNA-negative, our finding suggest roles of IFN-alpha and HCV infection in the pathogenesis of diabetes.


Subject(s)
Humans , Middle Aged , Cytokines , Diabetes Mellitus, Type 2 , Fatigue , Hepacivirus , Hepatitis C, Chronic , Hepatitis, Chronic , Insulin , Insulin Resistance , Interferon-alpha , Liver , Polydipsia , Polymerase Chain Reaction , Polyuria
18.
Journal of Lipid and Atherosclerosis ; : 137-140, 2015.
Article in English | WPRIM | ID: wpr-156414

ABSTRACT

Myocardial bridging (MB) occurs when the myocardium covers a segment of a major epicardial coronary artery, resulting in a tunneled arterial segment. Although MB is generally considered benign, it has been associated with myocardial ischemia. A 70-year-old man with MB (50% luminal narrowing during systole) at the mid-left anterior descending artery (LAD) on previous coronary angiography (CAG) visited our hospital with worsening chest pain. His blood pressure (BP) was not well controlled because of poor compliance. Follow-up CAG showed that MB at the mid-LAD progressed to severe stenosis (>90% luminal narrowing during systole) and the total length of tunneled artery extended from 22.5 to 23.9 mm. His chest pain was relieved by BP control. This is the first report of myocardial ischemia secondary to progression of MB demonstrated by CAG in Korea.


Subject(s)
Aged , Humans , Arteries , Blood Pressure , Chest Pain , Compliance , Constriction, Pathologic , Coronary Angiography , Coronary Vessels , Follow-Up Studies , Hypertension , Ischemia , Korea , Myocardial Bridging , Myocardial Ischemia , Myocardium , Phenobarbital
19.
Journal of Lipid and Atherosclerosis ; : 141-144, 2015.
Article in English | WPRIM | ID: wpr-156413

ABSTRACT

Iatrogenic aortic dissection occurs in association with diverse invasive procedures. It occurs primarily as a complication of cardiac surgery or after catheterization procedure. We found a case of iatrogenic abdominal aortic dissection caused by traumatic needle injury. The patient complained of abdominal pain after balloon kyphoplasty. Abdominal computed tomography (CT) showed intramural hematoma with air density suggestive of an iatrogenic cause. The patient was managed conservatively, and no lesion progression was noted in the follow-up CT. To the best of our knowledge, this is the first case of iatrogenic aortic dissection associated with kyphoplasty.


Subject(s)
Humans , Abdominal Pain , Catheterization , Catheters , Follow-Up Studies , Hematoma , Kyphoplasty , Needles , Thoracic Surgery
20.
Kosin Medical Journal ; : 177-182, 2013.
Article in Korean | WPRIM | ID: wpr-194261

ABSTRACT

Symptoms of tuberous scelrosis (TS) are mainly related with brain and kidneys. Seizure, mental retardation, other behavioral problems are dominant. A spectrum of renal tumors from benign angiomyolipoma (AML) to polycystic kidney disease, and rarely malignant renal cell carcinoma have been observed. Cystic AML is a rare phenotype of AML. No case of TS with renal cystic AML has been reported in Korea yet. And chronic kidney disease (CKD) in TS has been seldom reported. We experienced a TS case accompanied by renal cystic AML and CKD diagnosed in a 48-year-old female patient who was hospitalized for left side weakness and seizure under the diagnosis of acute cerebral infarction.


Subject(s)
Female , Humans , Middle Aged , Angiomyolipoma , Brain , Carcinoma, Renal Cell , Cerebral Infarction , Diagnosis , Intellectual Disability , Kidney , Kidney Failure, Chronic , Korea , Phenotype , Polycystic Kidney Diseases , Renal Insufficiency, Chronic , Sclerosis , Seizures , Tuberous Sclerosis
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