• 대한영상의학회지
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• 제83권3호
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• pp.687-692
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• 2022

남성 유방암은 드물며 유방암의 약 1%를 차지한다. 유방 외 악성 종양이 남성 유방으로의 전이는 매우 드물다. 남자에서 유방으로 전이되는 가장 흔한 원발성 종양은 전립선암, 폐암, 위암, 대장암, 흑색종 및 육종이다. 남자에서 방광암의 유방으로의 전이 유방암은 드물게 보고되었고, 종괴가 아닌 침윤성 소견의 전이 소견을 보이는 경우는 매우 드물다. 방광암이 유방으로 전이된 59세 남자 환자의 유방촬영술 및 초음파에서의 영상 소견을 보고하고자 한다.

• 대한영상의학회지
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• 제82권1호
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• pp.212-218
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• 2021

유잉육종계열의 종양은 뼈와 연부조직에 발생하는 악성 소원형청색세포종양이다. 골격외 유잉씨 육종은 드문 악성 종양으로 연부조직에 발생한 유잉육종의 한 형태이며, 소아와 젊은 성인에서 호발한다. 흉폐부위에 발생한 골격외 유잉씨 육종은 임상적으로 만져지는 종괴나 통증으로 나타난다. 골격외 유잉씨 육종이 앞가슴벽을 침범한 경우에는 유방 종괴로 나타날 수 있으나, 이러한 보고는 드물다. 저자들은 22세 여성에서 유방 종괴로 나타난 앞가슴벽에 발생한 유잉씨 육종의 증례를 보고한다. 초기의 초음파에서 이 거대 종괴는 유방에서 발생한 종괴로 오인되었으나, 추가적인 전산화단층촬영 및 자기공명영상에서 종괴는 흉벽에서 기원하였음을 알 수 있었다. 영상의학과 의사는 골격외 유잉씨 육종의 영상 소견을 알고, 흉벽의 병변이 임상적으로 유방 병변으로 오인될 수 있음을 이해하는 것이 중요하다.

• Korean Journal of Radiology
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• 제24권1호
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• pp.39-50
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• 2023

Objective: To assess the contrast-enhanced CT and ultrasonography (US) findings of intracholecystic papillary neoplasm (ICPN) and determine the imaging features predicting ICPN associated with invasive carcinoma (ICPN-IC). Materials and Methods: In this retrospective study, we enrolled 119 consecutive patients, including 60 male and 59 female, with a mean age ± standard deviation of 63.3 ± 12.1 years, who had pathologically confirmed ICPN (low-grade dysplasia [DP] = 34, high-grade DP = 35, IC = 50) and underwent preoperative CT or US. Two radiologists independently assessed the CT and US findings, focusing on wall and polypoid lesion characteristics. The likelihood of ICPN-IC was graded on a 5-point scale. Univariable and multivariable logistic regression analyses were performed to identify significant predictors of ICPN-IC separately for wall and polypoid lesion findings. The performances of CT and US in distinguishing ICPN-IC from ICPN with DP (ICPN-DP) was evaluated using the area under the receiver operating characteristic curve (AUC). Results: For wall characteristics, the maximum wall thickness (adjusted odds ratio [aOR] = 1.4; 95% confidence interval [CI]: 1.1-1.9) and mucosal discontinuity (aOR = 5.6; 95% CI: 1.3-23.4) on CT were independently associated with ICPN-IC. Among 119 ICPNs, 110 (92.4%) showed polypoid lesions. Regarding polypoid lesion findings, multiplicity (aOR = 4.0; 95% CI: 1.6-10.4), lesion base wall thickening (aOR = 6.0; 95% CI: 2.3-15.8) on CT, and polyp size (aOR = 1.1; 95% CI: 1.0-1.2) on US were independently associated with ICPN-IC. CT showed a higher diagnostic performance than US in predicting ICPN-IC (AUC = 0.793 vs. 0.676; p = 0.002). Conclusion: ICPN showed polypoid lesions and/or wall thickening on CT or US. A thick wall, multiplicity, presence of wall thickening in the polypoid lesion base, and large polyp size are imaging findings independently associated with invasive cancer and may be useful for differentiating ICPN-IC from ICPN-DP.

• 대한영상의학회지
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• 제85권1호
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• pp.124-137
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• 2024

장회전이상과 이로 인한 중장염전은 생후 1개월 이내에 호발하는 외과적 응급 질환이다. 전형적인 증상은 급성 담즙성 구토이며, 유아기 이후에는 반복적인 복통과 같은 비특이적인 증상을 호소할 수 있다. 장간막 띠로 인한 십이지장 폐쇄나 고리췌장, 십이지장 전방 문맥과 같은 기형을 동반하기도 한다. 중장염전은 장의 괴사를 일으켜 생명을 위협할 수 있으므로 정확하고 빠른 진단이 중요하다. 상부 위장관 조영술, 초음파 및 CT로 진단할 수 있으며, 초음파는 소아에서 방사선 피폭 없이 빠르고 정확하게 진단할 수 있어 선별검사로 대두되고 있다. 본 임상화보에서는 장회전이상과 중장염전의 핵심적인 영상 소견 및 진단적 접근법에 대해 알아보고, 실제 증례에서 경험한 진단적 오류와 주의할 점에 대하여 살펴보고자 한다.

• Archives of Plastic Surgery
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• 제37권4호
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• pp.427-432
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• 2010

Purpose: The purpose of this study is to estimate muscle defect by ultrasonography in the patients with secondary deformities of the lip. We investigated the association between the muscle defect in the repaired cleft lip and the philtral appearance not only at resting state but also maximal puckering. Methods: From December 2006 to November 2007, 52 children were evaluated after primary or secondary cheiloplasty. Digital photographs were taken both from the front and both three quarter views in repose and at maximal pucker. Video clips were also taken in repose and at maximal pucker. A panel of four, scored the philtral ridge and dimple seen on these photographs and videos by using two visual analog scales. Eminence of the philtral ridge was scored by a 5 point grading scale, from "conspicuous groove" to "normal philtral ridge" and the philtral dimple was scored by 3 point grading scale, from "no dimple" to "prominent dimple". Ultrasound images of the upper lip were made using a linear array transducer at the resting position of the lip and evaluated by a single radiologist. Results: The philtral ridge eminence scored $2.79{\pm}0.54$ and $1.40{\pm}0.53$ at resting and maximal pucker, correlating with "flat" and "conspicous groove". The philtral dimpling scored $1.44{\pm}0.53$ and $2.27{\pm}0.66$ at resting and maximal pucker, correlating with "no dimple" and "slight dimple". Ultrasound imaging showed the average muscle dehiscence to be $3.78{\pm}2.14$ mm at resting position. Correlation between the muscle defect in ultrasound imaging and philtral ridge eminence at rest was statistically significant (p<0.050), but was not significant (p=0.756) at maximal pucker using Spearman's rank correlation. Correlation between the muscle defect in ultrasound imaging and philtral dimpling was not statistically significant both at rest (p=0.920) and at maximal pucker (p=0.815) using Spearman's rank correlation. Conclusion: Quantitative assessment of the muscle defect using ultrasonography correlates with the static philtral appearance, but does not correlate with the dynamic appearance. Also, the size of the muscle defect does not show any correlation with the philtral dimpling. Our findings reveal that ultrasound imaging partially reflect static appearance of philtrum but cannot reflect dynamic appearance and suggest the need for further research to evaluate dynamic appearance.

• 대한정형외과 초음파학회지
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• 제4권1호
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• pp.1-6
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• 2011

목적: 자기 공명 영상 시행 전에 내측 반월상 연골의 파열 진단에서의 초음파 검사의 유용성을 알아보고자 하였다. 대상 및 방법: 2009년 4월부터 2010년 9월까지 본원 정형외과 외래를 방문하여 내측 반월상 연골 파열 의심 하에 초음파 검사를 시행한 341예 중 자기 공명 영상 검사를 시행한 147예를 대상으로 하였다. 초음파 검사상 이상 소견을 보이지 않는 16예, 비균질성(inhomogeneity)만을 보인 12예, 무리(cluster)를 보인 4예, 실질 내에 틈(cleavage)을 보인 60예, 5 mm 이상의 내측 탈출(extrusion)을 보인 55예를 자기 공명 영상 검사 결과와 비교 하였다. 통계학적으로 민감도와 특이도, 양성 예측률과 음성 예측률을 구하였다. 결과: 자기 공명 영상에서 파열을 보인 경우는 104예였다. 초음파 검사는 자기 공명 영상에 대하여 민감도가 94.2%, 특이도는 23.3%로 측정 되었다. 양성 예측률은 74.8%, 음성 예측률은 62.5%로 측정되었다. 초음파 영상에 따른 양성 예측률은 비균질성이 보이는 경우 58.3%, 무리를 보이는 경우에는 100%, 실질 내에 틈을 보이는 경우 75%, 내측 탈출을 보이는 경우 80%로 나타났다. 결론: 내측 반월상 연골 파열의 진단에 있어 고가의 자기 공명 영상을 시행하기 전 초음파 검사는 파열 가능성 여부를 사전에 아는데 유용하였다.

• Imaging Science in Dentistry
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• 제48권3호
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• pp.213-221
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• 2018

Purpose: The purpose of this study was to evaluate the relationship between masseter muscle thickness, facial morphology, and mandibular morphology in Korean adults using ultrasonography. Materials and Methods: Ultrasonography was used to measure the masseter muscle thickness bilaterally of 40 adults(20 males, 20 females) and was performed in the relaxed and contracted states. Facial photos and panoramic radiography were used for morphological analyses and evaluated for correlations with masseter muscle thickness. We also evaluated the correlations of age, body weight, stature, and body constitution with masseter muscle thickness. Results: In the relaxing, the masseter was $9.8{\pm}1.3mm$ in females and $11.3{\pm}1.2mm$ in males. In the contracted state, it was $12.4{\pm}1.4mm$ in females and $14.7{\pm}1.4mm$ in males. Facial photography showed that bizygomatic facial width over facial height was correlated with masseter muscle thickness in both sexes in the relaxed state, and was statistically significantly correlated with masseter muscle thickness in males in the contracted state. In panoramic radiography, correlations were found between anterior angle length and posterior angle length and masseter muscle thickness in females, and between body length and posterior angle length, between anterior angle length and body length, between ramal length and body length, and between body length and condyle length in males. Conclusion: Masseter muscle thickness was associated with facial and mandibular morphology in both sexes, and with age in males. Ultrasonography can be used effectively to measure masseter muscle thickness.

• Imaging Science in Dentistry
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• 제40권3호
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• pp.137-142
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• 2010

Purpose : This study was performed to evaluate the diagnostic ability of ultrasonography in detection of bone defects and new bone formation. Materials and Methods : Experimental bony defects were prepared on the parietal bone samples acquired from 3.5 kg New Zealand male rabbits. The defects were evaluated using ultrasonography and CBCT, and examined histologically at interval of 1, 3, 6, and 8 weeks. Results : Ultrasonograph demonstrated hyperechogenicity in the defect area at 3 weeks and broadened hyperechogenicity from the margin of bone defect at 6 and 8 weeks due to new bone formation. On the CBCT images, new bone formation was first observed at 3 weeks around the margin of the defect, and showed gradually increase at 6 and 8 weeks. Histologic findings revealed existence of the fibroblasts and fibrous connective tissue with abundant capillary vessels only at 1 week, but osteoid tissue and newly formed trabecular bone at 3 weeks. Bone remodeling in the defect area was observed at 6 weeks and increased calcification and dense trabecular bone formation was observed at 8 weeks. Conclusions : Ultrasonograph proved to be a very useful diagnostic tool in detecting the bony defect and new bone formation. Additionally, ultrasonography provided valuable information regarding the blood supply around the defect area.

• Journal of Animal Science and Technology
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• 제60권12호
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• pp.29.1-29.11
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• 2018

Background: Respiratory troubles have economic impacts in countries where livestock industry is an important segment of the agricultural sector, as well as these problems may cause significant economic losses for bovine producers. Various practical methods are used to assess diseases that affect the bovine respiratory system. Ultrasonography is a noninvasive tool that has been used frequently in diagnosis of various animal diseases. The present study was designed to establish whether thoracic ultrasonography is a diagnostic tool for detection of respiratory troubles in weaned buffalo and cattle calves, as well as to assess its prognostic value in comparison with clinical respiratory scores. Thirty five (15 buffalo and 20 cattle) calves were included. Twelve (6 buffalo and 6 cattle) clinically healthy calves were enrolled as controls. Results: Based on physical examinations, clinical respiratory scores (CRS), ultrasound lung scores (ULS) and postmortem findings, animals were classified into 4 groups as pulmonary emphysema (n = 8), interstitial pulmonary syndrome (n = 7), bronchopneumonia (n = 12), and pleurisy (n = 8). The mean values of CRS and ULS were significantly higher in diseased calves (P < 0.01). In calves with pulmonary emphysema and interstitial syndrome, thoracic ultrasonography revealed numerous comet-tail artifacts, which varied in numbers and imaging features. Furthermore, variable degrees of pulmonary consolidation with alveolograms and bronchograms were noticed in bronchopneumonic calves. In addition, thick irregular or fragmented pleura with pleural effusions and fibrin shreds were imaged in calves with pleurisy. A weak correlation was calculated between CRS and ULS (r = 0.55, P < 0.01). Hematologically, the counts of white blood cells, activities of aspartate aminotransferase and partial tensions of carbon dioxide were significantly increased in all diseased groups. Serum concentrations of total globulins were higher in claves with bronchopneumonia (P < 0.05). The partial tension of oxygen was decreased in all diseased calves (P < 0.05). Conclusions: Thoracic ultrasonography is a diagnostic tool for various lung troubles and assessment the grade and severity of pulmonary diseases, as well as it can be used as a follow-up tool for evaluating the prognosis of respiratory troubles and monitoring the efficacy of therapies.

• Investigative Magnetic Resonance Imaging
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• 제19권4호
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• pp.237-240
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• 2015

Breast hamartomas are typically a benign condition and rarely develop into malignant lesions. The coexistence of carcinoma and a breast hamartoma is rare; only 15 cases have been reported in the literature. Here, we report a case of invasive ductal carcinoma associated with hamartoma in a 60-year-old woman. Mammography, ultrasonography and magnetic resonance imaging showed typical features of a breast hamartoma and a suspicious mass with microcalcifications arising within the hamartoma.