Yi Kyung Kim

Publications (3)9.86 Total impact

• Article: Intraocular lymphoma after cardiac transplantation: magnetic resonance imaging findings.

  Yi Kyung Kim, Hyung-Jin Kim, Kyung In Woo, Yoon-Duck Kim
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  ABSTRACT: We report a case of intraocular lymphoma in a 65-year-old man, 15 months after cardiac transplantation. On Magnetic Resonance (MR) images, the iris and the anterior chamber of the right eye were found to be involved with an enhancing soft-tissue lesion. To our knowledge, this is the first case of post-transplantation intraocular lymphoma evaluated with MR imaging.
  Korean journal of radiology: official journal of the Korean Radiological Society 01/2013; 14(1):122-5. · 1.32 Impact Factor
• Article: Dry pleural dissemination in non-small cell lung cancer: prognostic and diagnostic implications.

  Yi Kyung Kim, Ho Yun Lee, Kyung Soo Lee, Joungho Han, Myung-Ju Ahn, Keunchil Park, Young Mog Shim, Jhingook Kim
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  ABSTRACT: To compare prognostic differences between dry pleural dissemination (DPD) and wet pleural dissemination (WPD) in patients with non-small cell lung cancer (NSCLC) andto review the applicability of computed tomographic (CT) findings of DPD for rendering the diagnosis of this disease. The institutional review board approved this retrospective study, and informed patient consent was waived. Of 98 patients (male-to-female ratio, 55:43; mean age, 60 years ± 12) with NSCLC, 20 patients had pathologically proved DPD, and the remaining 78 patients had pathologically proved WPD. Twelve patients, who had been lost to follow-up, were excluded from survival analysis. Observers looked for CT findings of multiple pleural or fissural nodules (more than six in number) and uneven thickening or bandlike thickness. Survival after initial presentation was analyzed and compared between patients with DPD (n = 19) and patients with WPD (n = 67) by using the Kaplan-Meier method and the log-rank test. The sensitivity of CT for depicting DPD was also calculated. Median survival after initial presentation was significantly longer in patients with DPD than in patients with WPD; it was 38 months (95% confidence interval [CI]: 29.9 months, 46.0 months) in patients with DPD and 13 months (95% CI: 9.8 months, 16.2 months) in patients with WPD (P <.001). CT helped identify DPD in 90% (18 of 20) of patients with pathologically proved DPD. Multiple pleural or fissural nodules were noted on CT images in 16 (80%) of 20 patients. Uneven or bandlike pleural thickening was recognized in 15 (75%) patients. Patients with DPD show better survival than patients with WPD. CT helps suggest strongly the presence of DPD preoperatively.
  Radiology 06/2011; 260(2):568-74. · 5.73 Impact Factor
• Article: Nasal polyps with metaplastic ossification: CT and MR imaging findings.

  Yi Kyung Kim, Hyung-Jin Kim, Jinna Kim, Seung-Kyu Chung, Eunhee Kim, Young-Hyeh Ko, Sung Tae Kim
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  ABSTRACT: Metaplastic ossification is a rare event in nasal polyps. The purpose of this study was to review the computed tomography (CT) and magnetic resonance (MR) imaging findings of nasal polyps with metaplastic ossification. CT (n=5) and MR (n=3) images of five patients (four men and one woman; mean age, 59 years) with surgically proven nasal polyp with metaplastic ossification were retrospectively reviewed. The location and morphologic characteristics of metaplastic ossification were documented as well. All lesions were seen as lobulated (n=3), ovoid (n=1), or dumbbell-shaped (n=1) benign-looking masses with a mean size of 3.7 cm (range, 2.4-6.5 cm), located unilaterally in the posterior nasal cavity and nasopharynx (n=2), posterior nasoethmoidal tract (n=2), and maxillary sinus and nasal cavity (n=1). Compared with the brain stem, the soft tissue components of all lesions demonstrated isoattenuation on precontrast CT scans, slight hypointensity on T1-weighted MR images, and hyperintensity on T2-weighted MR images. On contrast-enhanced MR images, heterogeneous enhancement with marked peripheral enhancement was seen in two and homogeneous moderate enhancement in one. All lesions contained centrally located radiodense materials on CT scans, the shape of which was multiple clustered in three, single nodular in one, and single large lobulated in one. Although rare, metaplastic ossification can occur within nasal polyps. The possibility of its diagnosis may be raised when one sees a benign-looking sinonasal mass with centrally located radiodense materials on CT scans. MR imaging may be useful when mycetoma or inverted papilloma cannot be ruled out on CT scans.
  Neuroradiology 12/2010; 52(12):1179-84. · 2.82 Impact Factor