Journal of Yeungnam Medical Science

Original article

Diagnostic performance of F-18 FDG PET or PET/CT for detection of recurrent gastric cancer: a systematic review and meta-analysis: Chang In Choi, Jae Kyun Park, Tae Yong Jeon, Dae-Hwan Kim; J Yeungnam Med Sci. 2023;40(Suppl):S37-S46. Published online August 17, 2023; DOI: https://doi.org/10.12701/jyms.2023.00220

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Abstract PDF: Background
This systematic review and meta-analysis investigated the diagnostic performance of F-18 fluorodeoxyglucose (FDG) positron emission tomography (PET) or PET/computed tomography (PET/CT) for the detection of disease recurrence after curative resection of gastric cancer.
Methods
The PubMed and Embase databases, from the earliest available date of indexing through November 30, 2019, were searched for studies evaluating the diagnostic performance of F-18 FDG PET or PET/CT to detect recurrent disease after gastric cancer surgery.
Results
Across 17 studies (1,732 patients), the pooled sensitivity for F-18 FDG PET or PET/CT was 0.82 (95% confidence interval [CI], 0.74–0.88) with heterogeneity of I2=76.5 (p<0.001), and the specificity was 0.86 (95% CI, 0.78–0.91) with heterogeneity of I2=94.2 (p<0.001). Likelihood ratio (LR) tests gave an overall positive LR of 6.0 (95% CI, 3.6–9.7) and negative LR of 0.2 (95% CI, 0.14–0.31). The pooled diagnostic odds ratio was 29 (95% CI, 13–63). The summary receiver operating characteristic curve indicates that the area under the curve was 0.91 (95% CI, 0.88–0.93).
Conclusion
The current meta-analysis showed good sensitivity and specificity of F-18 FDG PET or PET/CT for detecting recurrent disease after curative resection of gastric cancer despite heterogeneity in ethnicity, recurrence rate, histology, and interpretation method.

Case report

Multilocular cystic hemangioma of the liver mimicking mucinous cystic neoplasm: a case report: Nam Kyung Lee, Suk Kim, Seung Baek Hong, So Jeong Lee, Hyung Il Seo; J Yeungnam Med Sci. 2022;39(1):53-57. Published online April 7, 2021; DOI: https://doi.org/10.12701/yujm.2021.00969

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Abstract PDF: Hepatic hemangiomas infrequently exhibit atypical imaging features, which may cause diagnostic confusion with hepatic malignancies and lead to unnecessary surgery. We report a rare case of multilocular cystic hemangioma of the liver mimicking a mucinous cystic neoplasm of the liver in a 48-year-old female, focusing on computed tomography and magnetic resonance imaging features and their differential diagnosis.

Review article

F-18 fluorodeoxyglucose positron emission tomography/computed tomography in the infection of heart: Eunjung Kong; Yeungnam Univ J Med. 2021;38(2):95-106. Published online October 15, 2020; DOI: https://doi.org/10.12701/yujm.2020.00479

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2 Crossref

Abstract PDF

Infections involving the heart are becoming increasingly common, and a timely diagnosis of utmost importance, despite its challenges. F-18 fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) is a recently introduced diagnostic tool in cardiology. This review focuses on the current evidence for the use of FDG PET/CT in the diagnosis of infective endocarditis, cardiac implantable device infection, left ventricular assist device infection, and secondary complications. The author discusses considerations when using FDG PET/CT in routine clinical practice, patient preparation for reducing physiologic myocardial uptake, acquisition of images, and interpretation of PET/CT findings. This review also functions to highlight the need for a standardized acquisition protocol.

Citations

Citations to this article as recorded by

The Role of the 18F-FDG PET/CT in the Management of Patients Suspected of Cardiac Implantable Electronic Devices’ Infection
Antonio Rosario Pisani, Dino Rubini, Corinna Altini, Rossella Ruta, Maria Gazzilli, Angela Sardaro, Francesca Iuele, Nicola Maggialetti, Giuseppe Rubini
Journal of Personalized Medicine.2024; 14(1): 65. CrossRef
The detection of infectious endocarditis may be enhanced by a repeat FDG-PET while maintaining patients on a ketogenic diet
Marine Germaini, Caroline Boursier, François Goehringer, Christine Selton-Suty, Benjamin Lefevre, Véronique Roch, Laetitia Imbert, Marine Claudin, Elodie Chevalier, Pierre-Yves Marie
Journal of Nuclear Cardiology.2022; 29(6): 3256. CrossRef

Original Article

Nephropathy related to computed tomography in emergency department patients with serum creatinine <1.5 mg/dL.: Jong Ha kim, Sin Youl Park, Chong Gun Kim; Yeungnam Univ J Med. 2015;32(2):90-97. Published online December 31, 2015; DOI: https://doi.org/10.12701/yujm.2015.32.2.90

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Abstract PDF: BACKGROUND
Contrast-induced nephropathy (CIN) can cause serious adverse effects. To reduce the occurrence of CIN related computed tomography (CT) in emergency patients, we assessed the respective roles of serum creatinine (SCr) alone and estimated glomerular filtration rate (eGFR) as an early predictor for CIN related CT. METHODS: For patients with SCr <1.5 mg/dL who underwent CT in emergency department (ED) between September 2012 and October 2013, we assessed the prevalence of CIN and its adverse effects. The Modification of Diet in Renal Disease Study (MDRD) and Cockcroft-Gault (CG) formula was used for the calculation of eGFR. Practical calculation was performed by electronic medical record (EMR) system for MDRD and internet calculating service for CG. And we investigated the prevalence of CIN in eGFR <60 mL/min/1.73 m2 before CT. RESULTS: A total of 1,555 patients were enrolled. The prevalence of CIN after CT was 4.6% and it showed correlation with renal deterioration, increased in-hospital mortality, and prolonged hospitalization. Despite baseline SCr <1.5 mg/dL, among enrolled patients, 11.3% as MDRD equation and 29.5% as CG formula were <60 mL/min/1.73 m2 and in this condition, the prevalence of CIN was significantly high (odds ratio was 2.87 [1.64-5.02] as MDRD equation and 2.03 [1.26-3.29] as CG formula). CONCLUSION: Just SCr <1.5mg/dL was not appropriate to recognize preexisting renal insufficiency, but eGFR using MDRD equation was useful in predicting the risk of CIN related CT in ED. Using EMR, calculation of eGFR can be easier and more convenient.

Case Reports

An adult asymptomatic pulmonary artery sling.: Han Hee Chung, Ju Yeol Baek, Won Yik Lee, Ji Hye Jang, Min Young Jeong, Gi Hyeon Woo, Seong Il Park, Il Kyu Kim; Yeungnam Univ J Med. 2014;31(2):109-112. Published online December 31, 2014; DOI: https://doi.org/10.12701/yujm.2014.31.2.109

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Abstract PDF: A pulmonary artery sling is a very rare congenital abnormality in which the left pulmonary artery rises from the posterior surface of the right pulmonary artery and then passes between the trachea and the esophagus, causing tracheal compression. It is associated with tracheo-bronchial abnormalities (50%) and cardiovascular abnormalities (30%). It may produce respiratory symptoms through the airway compression of the abnormal left pulmonary artery and congenital abnormalities associated with it. Because most (90%) pulmonary artery sling patients present symptoms during infancy, their condition is often diagnosed in the first year of life. However, a pulmonary artery sling is occasionally found in adults. It is usually asymptomatic and found incidentally. This is a very rare case of an asymptomatic pulmonary artery sling in an adult. A 38-year-old man presented symptoms of mild exertional dyspnea. His spiral computed tomography showed a pulmonary artery sling. He was discharged without specific treatment because his symptoms improved without specific treatment and might not have been associated with a pulmonary artery sling. We report an adult case of an asymptomatic pulmonary artery sling diagnosed via spiral computed tomography, accompanied by a literature review.

A Case of Gastric Glomus Tumor.: Jin Sung Lee, Sun Taek Choi, Hyun Uk Lee, Byung Jin Kwon, Ji Eun Lee, Si Hyung Lee; Yeungnam Univ J Med. 2011;28(2):165-172. Published online December 31, 2011; DOI: https://doi.org/10.12701/yujm.2011.28.2.165

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Abstract PDF: Gastric glomus tumor is a rare mesenchymal tumor that originates from modified smooth muscle cells of the glomus body. Glomus tumors are commonly observed in peripheral soft tissue, such as dermis or subungal region, but rarely in the gastrointestinal tract. A 39-year-old woman was admitted due to epigastric soreness. Upper gastrointestinal endoscopy revealed a subepithelial mass measuring 3.5cm with central ulceration at the lesser curvature-posterior wall of the antrum. Characteristically, contrast enhanced abdominal computed tomography scan demonstrated high enhancement of the submucosal mass up to the same level of the abdominal aorta in the arterial phase; this enhancement persisted to delayed phase. Due to the risk of bleeding and malignancy, wedge resection of the submucosal tumor was performed. Histologic findings were compatible with a glomus tumor.

Dynamic CT Finding of Pelioid HCC; Case Report.: Rak Chae Son, Jae Woon Kim, Jae Chun Chang; Yeungnam Univ J Med. 2010;27(2):146-149. Published online December 31, 2010; DOI: https://doi.org/10.12701/yujm.2010.27.2.146

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Abstract PDF: Pelioid hepatocellular carcinoma (HCC), a type of atypical HCC, is a rare histologic type of HCC. The radiologic findings of the pelioid HCC is differ from the typical type of HCC. To our knowledge, this case report is the second literature to show the enhancing features of a pelioid HCC on dynamic computed tomography (CT). Here we describe the dynamic CT findings in a case of surgically confirmed pelioid HCC.

Original Articles

Congenital Aortic Arch Anomaly : CT Findings and Incidence: Jae Kyo Lee, Mi Soo Hwang; Yeungnam Univ J Med. 2007;24(2 Suppl):S549-554. Published online December 31, 2007; DOI: https://doi.org/10.12701/yujm.2007.24.2S.S549

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Abstract PDF: Purpose：The study was done to evaluate the variable presentation of aortic arch anomaly. Materials and Methods：Among consecutive 10,008 patients who underwent chest CT scanning at our institution for five years, we experienced 49 cases of aortic arch anomalies. The patients who represented with right side aortic arch only were excluded.
Results
：Thirty five patients revealed aberrant right subclavian artery, 11 patients show aberrant left subclavian artery with right side aortic arch, and 3 patients revealed double aortic arch. No patients represent obstructive symptom.
Conclusion
：Aberrant subclavian artery and double aortic arch were common congenital aortic arch anomaly, and recognition of vascular anomaly can avoid procedure failure of surgery and interventional therapy.

Evaluation of Computed Tomography and Magnetic Resonance Imaging of Sinonasal Inverted Papilloma.: Chang Hoon Bai, Young Jung Seo, Seok Choon Lee, Seung Min Chen, Un Hoi Baek, Eun Chae Jung, Si Youn Song, Yong Dae Kim; Yeungnam Univ J Med. 2005;22(2):191-198. Published online December 31, 2005; DOI: https://doi.org/10.12701/yujm.2005.22.2.191

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Abstract PDF: BACKGROUND
Computed tomography (CT) is commonly used to evaluate the degree of sinus involvement in cases of inverted papilloma (IP). However, CT cannot differentiate tumor from adjacent inflammatory mucosa or retained secretions. By contrast, magnetic resonance imaging (MRI) has been reported to be useful in distinguishing IP from paranasal sinusitis. This study investigated whether preoperative assessment with MRI and CT accurately predict the extent of IP. MATERIALS AND METHODS: CT and MRI were retrospectively reviewed in 9 cases of IP. Patients were categorized into stages based on CT and MRI findings, according to the staging system proposed by Krouse. The involvement of IP in each sinus was also assessed. RESULTS: Differentiation of IP from inflammatory disease may be more successful in routine cases where the inflammatory mucosa has low signal intensity on T1-weighted images and very high signal intensity on T2-weighted images. CT imaging could not differentiate tumor from adjacent inflammatory mucosa or retained secretions. CONCLUSION: Preoperative MRI of IP can predict the location and extent of the tumor involvement in the paranasal sinuses and sometimes predicts malignant changes.

Pulmonary Cryptococcosis in Immunocompetent Patients: CT Findings.: Jae Kyo Lee; Yeungnam Univ J Med. 2004;21(1):74-81. Published online June 30, 2004; DOI: https://doi.org/10.12701/yujm.2004.21.1.74

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Abstract PDF: PURPOSE: To evaluate the computed tomography (CT) findings of pulmonary cryptococcosis in immunocompetent patients. MATERIALS AND METHODS: CT scans of 25 patients with biopsy-proven cryptococcosis [surgery (n=3), percutaneous needle biopsy (n=21), and bronchoscopic biopsy (n=1) ] were analyzed. Thirteen patients were men and 12 patients were women, with a mean age of 53.7 years. Presenting symptoms were cough, sputum, and dyspnea and 12 patients presented with incidentally found chest radiographic abnormalities. RESULTS: Nodule or multiple conglomerate nodules (n=10, 40%) and segmental or lobular consolidation (n=9, 36%) were most common, followed by mixed patterns (n=5, 20%). Predilection sites were lower lobe (n=21/37, 57%) and subpleural areas (n=23, 92%). Air bronchograms within consolidations (n=11/14, 79%) with mild volume loss (n=10/14, 71%) were common. While interlobular septal thickening (n=11, 44%) and cavitation or central low-attenuations (n=11, 44%) were relatively common, lymphadenopathy (n=2, 8%) or free pleural effusions (n=1, 4%) were uncommon. CONCLUSION: Nodules or airspace consolidation with a predilection of lower lobe and subpleural area are the most common appearances of pulmonary cryptococcosis in immunocompetent patients.

The Measurement of Size of the Pedicle Using 3 Dimensional Reconstruction Image in Idiopathic Scoliosis.: Jae Hee Heo, Myun Hwan Ahn; Yeungnam Univ J Med. 2004;21(1):40-50. Published online June 30, 2004; DOI: https://doi.org/10.12701/yujm.2004.21.1.40

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Abstract PDF: BACKGROUND
This study was conducted to analyze the height and width of the pedicle of the upper and lower levels on the concave and the convex sides. In addition, we checked for the appropriate pedicle screw size which could be screwed in without complications. MATERIALS AND METHODS: Taking a simple AP radiography in a standing position, 99 vertebrae on the major curve with the possibility of 3-D reconstruction were analyzed after checking the CT in a supine position of 22 idiopathic scoliosis. We measured Cobb's angle from a simple radiograph, and measured the size of the isthmus by the Inner Space 3-D Editor after 3-D reconstruction with the Inner Space 3-D program in the DICOM file transformed from CT image. We then analyzed the size of pedicles of the upper and lower levels on the concave and the convex sides by measuring the height and width of the pedicle. RESULTS: All pedicles on the concave side were smaller than those on the convex side. Their size increased as the measurement moved from the upper to lower vertebra, except for the upper thoracic vertebra. When the width of the pedicle through 3-D reconstruction was compared with the narrowest width of the pedicle measured by using CT, the width of the pedicles through 3-D reconstruction was statistically smaller (P< 0.01). Most of the pedicles were tear-drop or kidney shaped rather than cylindrical. CONCLUSION: These results suggest that the use of the coronal plane through 3-D reconstruction would be necessary for an accurate measurement of the size of the pedicle. It is important to pay careful attention to the screw size and the screwing method considering the pedicle shape through 3-D reconstruction.

Significance of the AFP Level and HBsAg in Differentiation of Hepatic Masses.: Jae Woon Kim, Won Kyu Park, Jae Ho Cho, Jae Chun Chang, Bok Hwan Park; Yeungnam Univ J Med. 1996;13(2):302-307. Published online December 31, 1996; DOI: https://doi.org/10.12701/yujm.1996.13.2.302

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Abstract PDF: Hepatic masses show different enhancing patterns in N bolus computed tomography: Hepatocellular carcinoma shows high-attenuation in the early enhancing phase and low-attenuation in the late enhancing phase, hemangioma shows peripheral dot-like high-attenuation in the early enhancing phase and central high-attenuation in the late enhancing phase, and metastatic cancer and cholangiocelluar carcinoma show peripheral high-attenuation rim in the early enhancing phase and central portion gradulally high attenuation in the late enhancing phase. but sometimes enhancing patterns of the hepatic masses are confuse. To evaluate the significance of the AFP level and HBsAg in differentiation of the hepatic masses, we retrospectively analyzed AFP level and HBsAg' in 228 pathologically or radiologically confirmed hepatocellular carcinomas, and 137 pathologically nonhepatocellular cacinomas. The results were as follows In hepatocellular carcinoma, AFP level above 20ng/ml was 77.8% and HBsAg positve was 72.6%. In nonhepatocellular carcinoma, AFP level above 20ng/ml was 3.7% and HBsAg positve was 16.1%. We concluded that AFP level and HBsAg are helpful to distinguish hepatocellular carcinoma from nonhepatocellular carcinoma, when IV bolus computed tomogram finding is uncertain.

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