• Imaging Science in Dentistry
• /
• 제53권4호
• /
• pp.303-312
• /
• 2023

Purpose: This study investigated the prevalence of developmental and acquired pathologic conditions associated with impacted third molars (3Ms) in a Southern Brazilian population and evaluated whether demographic and tooth characteristics were correlated with the presence of bone or tooth lesions. Materials and Methods: Panoramic radiographs were assessed for developmental (bone-related) or acquired (tooth-related) pathoses associated with impacted upper or lower 3Ms. Data on tooth positioning, tooth development, and patient demographics were collected. A trained, calibrated postgraduate student evaluated all images. Binary and multivariate logistic regression models were used to assess associations between outcomes and the demographic and radiographic variables. The threshold for statistical significance was set at 5% (P<0.05). Results: The sample comprised panoramic radiographs from 2054 patients, predominantly female (59.2%), with a mean age of 27.2±11.5 years. Overall, 4066 impacted 3Ms were evaluated, revealing 471 (11.6%) developmental and 710 (17.5%) acquired pathoses. Among the developmental pathoses, 460 (95.2%) were indicative of dentigerous cysts. Male sex, lower 3M location, vertical or distoangular positioning, and incomplete root formation were associated with an elevated likelihood of developmental pathology. Lower tooth position, complete root formation, and partial eruption were linked to an increased probability of an acquired pathology in the third or second molar. Conclusion: The prevalence of pathologic conditions associated with impacted 3Ms was low. Male sex, lower 3M placement, horizontal or distoangular positioning, and incomplete root formation were associated with developmental pathoses, while lower tooth position, complete root formation, and partial eruption were related to acquired pathoses.

• 대한족부족관절학회지
• /
• 제28권2호
• /
• pp.60-67
• /
• 2024

Purpose: Sinus tarsi syndrome (STS) is caused by various pathologies. However, the exact etiology of STS remains controversial. This study evaluated the imaging and arthroscopic findings of patients who underwent surgical treatment after conservative treatment for STS failed. Materials and Methods: Between December 2014 and August 2018, 20 patients (21 cases) who underwent surgical treatment for STS were included in the study. The clinical results were analyzed using the visual analog scale (VAS) and the American Orthopedic Foot and Ankle Society (AOFAS) ankle-hindfoot functional scale. The radiographic results were analyzed using Meary's angle, calcaneal pitch angle, and hindfoot alignment angle. The pathologic conditions of sinus tarsi were confirmed by magnetic resonance imaging (MRI) and subtalar arthroscopy. Synovitis, bone edema, and accessory anterolateral talar facet (AALTF) were evaluated on MRI. Synovial thickening, cartilage damage, interosseous talocalcaneal ligament (ITCL) and cervical ligament rupture, soft tissue impingement, AALTF, and accessory talar facet impingement (ATFI) were evaluated by subtalar arthroscopy. Results: The mean duration of symptoms was 28.7 months (4~120). All patients showed significant improvement in the VAS and AOFAS ankle-hindfoot scale. Significant improvements in hindfoot alignment angle and Meary's angle postoperatively were noted in patients who underwent medial displacement calcaneal osteotomy. MRI confirmed synovitis in all patients, AALTF in 19 cases (90.5%), and ATFI with bone edema in seven cases (33.3%). In subtalar arthroscopy, pathologic conditions were observed in the following order: synovitis in 21 cases (100%), AALTF in 20 cases (95.2%), ITCL partial rupture in nine cases (42.9%), and soft tissue impingement in seven cases (33.3%). All cases had two or more pathological conditions, and 15 (71.4%) had three or more. Conclusion: In cases of STS that do not respond to conservative treatment, a comprehensive examination of the lesions of the tarsal sinus and lesions around the subtalar joint is essential.

• Korean Journal of Radiology
• /
• 제1권2호
• /
• pp.104-109
• /
• 2000

Objective: Multilocular cystic renal cell carcinoma (MCRCC) is a recently described variety of renal cell carcinoma with characteristic pathologic and clinical features. The purpose of this study was to analyze the imaging findings of MCRCCs. Materials and Methods: Ten adult patients with pathologically proven unilateral MCRCC who underwent renal US and CT were included in this study. The radiologic findings were retrospectively evaluated for cystic content, wall, septum, nodularity, calcification and solid portion by three radiologists who established a consensus. Imaging and postnephrectomy pathologic findings were compared. Results: All patients were adults (six males and four females) and their ages ranged from 33 to 68 years (mean, 46). On US and CT images, all tumors appeared as well-defined multilocular cystic masses composed of serous or complicated fluid. In all patients, unenhanced CT scans revealed hypodense cystic portions, and in four tumors, due to the presence of hemorrhage or gelatinous fluid, some hyperdense areas were also noted. In no tumor was an expansile solid nodule seen in the thin septa, and in only one was there dystrophic calcification in a septum. Small areas of solid portion constituting less than 10% of the entire lesion were found in six of the ten tumors, and these areas were slightly enhanced on enhanced CT scans. In all patients, imaging and pathologic findings correlated closely. Conclusion: On US and CT images, MCRCC appeared as a well-defined multilocular cystic mass with serous, proteinaceous or hemorrhagic fluid, with no expansile solid nodules in the thin septa, and sometimes with small slightly enhanced solid areas. Where radiologic examinations demonstrate a cystic renal mass of this kind in adult males, MCRCC should be included in the differential diagnosis.

• 한방재활의학과학회지
• /
• 제25권1호
• /
• pp.17-26
• /
• 2015

Objectives This study was carried out to investigate the experimental effects of Lonicerae Caulis and Bee-venom Acupuncture in Yanglingquan (陽陵泉, GB34) that have clinical efficacy in the Rheumatoid Arthritis. Methods Materials of present study are Lonicerae Caulis Extracts (LCE), Bee-Venom Acupuncture (BVP), Sprague-dawley rats (250 g or so, ♂), and various kinds of needing experimental studies. We measured several experimental items of the rats with the arthritis induced by Freund's complete adjuvant (0.2 ml/kg), such as body weight, rate of paw edema, analgesic effect by hot plate method, WBC, TNF-${\alpha}$ cytokine and IL-10 cytokine. Rats were divided into four groups; Normal group that was treated with normal saline 1.0 ml (o.p) and $15{\mu}l/kg$ (GB34) to normal rats, Control group that was treated with normal saline 1.0 ml (o.p) and $15{\mu}l/kg$ (GB34) to pathologic model rats induced by Freund's complete adjuvant 0.2 ml/kg, Experimental group A that was treated with LCE 1.0 ml (o.p) and normal saline $15{\mu}l/kg$ (GB34) to pathologic model rats induced by Freund's complete adjuvant 0.2 ml/kg and Experimental group B that was treated with LCE 1.0 ml (o.p) and BVP $15{\mu}l/kg$ (GB34) to pathologic model rats induced by Freund's complete adjuvant 0.2 ml/kg, and the experiment took over after 28 days. The results were analysed using SPSS for windows 12.0. Results Experimental group A showed the increase in body weight, paw licking times and IL-10 cytokine compared to Control group. Also it was decreased in rate of paw edema, WBC, and TNF-${\alpha}$ cytokine compared with Control group. Experimental group B showed the increase in body weight, paw licking times, and IL-10 cytokine compared to Control group, and showed the decrease in rate of paw edema, WBC and TNF-${\alpha}$ cytokine compared to Control group. Especially TNF-${\alpha}$ cytokine and rate of paw edema were accepted statistical significance compared with Control group. Conclusions It is suggested that Lonicerae Caulis (o.p) and Bee-venom Acupuncture (GB34) can be used in the treatment of rheumatoid arthritis.

• Journal of Preventive Medicine and Public Health
• /
• 제20권1호
• /
• pp.56-66
• /
• 1987

Information on productivity of hospital personnel is required for optimum staffing and hospital management. This study deals with the quantitative aspects of workload of medical personnel in training hospitals by their specific characteristics. Specifically this study attempted to find relevant determinants of the productivity of medical personnel using multiple stepwise regression analysis based on data obtained from 135 training hospitals. The findings of this study were as follows: 1) Daily average number of outpatients and inpatients treated by a physician were 20.4 and 10.2, respectively. 2) Daily average number of patients cared by a nurse was 8.2. Daily average number of tests performed by pathologic technician and radiologic technician were 83.2 and 21.5, respectively. 3) Productivity of medical personnel were significantly different for the three groups of factors: hospital sire (number of beds, number of medical personnel per 100 beds): institutional characteristics (medical school affiliation, training type, profit status); and environmental factors (location, number of physician and beds per 1,000 population in the region). 4) The factors a(footing the productivity varied according to the types of medical profession: the number if beds, the number of physicians per 100 beds, training type, and profit status for physicians; the number of nurses per 100 beds, the number of beds, medical school affiliation for nurses; the number of physicians per 100 beds, the number of technicians per 100 beds, and ownership for pathologic technicians; the number o( technicians, training type, and the number of physicians per 100 beds for radiologic technician.

• 고신대학교 의과대학 학술지
• /
• 제33권3호
• /
• pp.289-296
• /
• 2018

Objectives: In these days, patients with stage I breast cancer have increased by regular health examination and diagnostic tool development. The aim of this retrospective study is to identify systemic recurrence related factors after breast conserving surgery (BCS) for stage I breast cancer. Methods: In this study, we analyzed the correlation between systemic recurrence and pathologic factors. We reviewed 223 patients who underwent BCS for stage I breast cancer. Postoperative pathologic factors, recurrent rates and sites were studied. In addition, preoperative patients'data were also collected. Statistical analysis was done by using PASW 16.0 (SPSS Inc., Chicago, IL, USA). Results: Systemic recurrence was found in 16 patients (7.17%) within 5 years after primary surgery. 5 patients had lymphatic invasion and 6 patients had vascular invasion. Lymphatic and vascular invasion had statistical correlation with systemic recurrence (P = 0.004, P = 0.001). Conclusions: In this retrospective study, we can conclude that vascular invasion and lymphatic invasion are related systemic recurrence after BCS for stage I patients. Further studies with large cohort will be required to fully understand the risk factors of systemic recurrence for stage I breast cancer patients.

• Pediatric Gastroenterology, Hepatology & Nutrition
• /
• 제2권2호
• /
• pp.139-146
• /
• 1999

목 적: 소아에서 흔히 볼 수 있는 반복적 구토 또는 게우기는 대부분 생리적 위식도 역류에 기인하지만 치료가 필요한 병적인 역류와 감별이 필요하다. 병적 역류의 진단에 이용되는 24시간 식도산도 측정의 임상적 의의와 더불어 역류지표들을 평가해 보고자 본 연구를 시행하였다. 대상 및 방법: 반복적 구토 또는 게우기를 주소로 내원한 환아들 중 glass electrode 및 GastrograpH (MIC, Switzerland)를 이용하여 24시간 식도 산도측정을 시행한 87례를 대상으로 병적 역류의 연령별 빈도를 알아보고, 생리적 및 병적 역류군의 역류 지표들의 평가와 더불어 두 군내에서의 하루중 시간대 별 역류 지수의 차이를 알아보고자 하였다. 결 과: 총 87명 중 병적 역류 환아는 32명(36.8%) 였으며, 연령별로는 6개월 미만에서 32.5%, 6개월~1세 사이 13.3%, 1~2세 사이 61.5%, 2~3세 사이 14.3%, 3세 이상에서는 66.7%에서 병적역류를 보였다. 생리적 역류군에서 총 역류지수는 1세미만에서 $3.7{\pm}2.9%$, 1세 이상에서 $1.8{\pm}1.5%$로 1세 전후에서 유의한 차이(p=0.02)를 보였으며, 하루 시간대별 1세 전후의 역류지수는 아침시간대에서만 1세 이하군이 의의 있게(p=0.04) 높았다. 역류횟수는 각각 $118{\pm}150$, $108{\pm}104$회로 1세 전후에서 유의한 차이는 없었다. 5분 이상 지속된 역류횟수는 1세 전후에서 각각 $1.7{\pm}1.9$, $0.8{\pm}1.0$회로 1세이하에서 유의하게(p=0.03) 많았으며, 가장 긴 1회 역류시간은 1세 전후에서 각각 $604{\pm}551$초, $275{\pm}296$초로 1세 이하에서 유의하게(p=0.007) 길었다. 병적 역류군에서 총역류지수는 1세 미만에서 $17.7{\pm}11.6%$, 1세 이상에서$7.7{\pm}2.9%$였고 역류횟수는 1세 전후에서 각각 $365{\pm}224$, $294{\pm}202$회였으며, 5분 이상 지속된 역류횟수는 $8.9{\pm}4.6$, $3.2{\pm}1.8$회였다. 가장 긴 1회 역류시간은 1세 전후에서 각각 $1955{\pm}2190$초, $1093{\pm}706$초였다. 생리적 및 병적 역류군 각각에서 하루 시간대 사이의 역류 지수를 비교한 결과 유의한 차이는 없었다. 결 론: 반복적 구토 또는 게우기를 주소로 내원한 환아에서 glass electrode 및 GastrograpH를 이용한 24시간 식도 산도 측정 검사상 1세 미만에서는 역류 지수 10%, 1세 이상에서는 5%를 기준으로 했을 때 병적 역류는 36.8%에서 관찰되었다. 생리적 및 병적 역류군의 시간대별 역류 지수 사이에는 유의한 차이가 없었다. 본 연구에서 병적 역류군의 역류발생빈도가 연령에 따라 차이가 크며, 특히 1~2세 사이의 환아에서 그 비율이 현저히 높았고, 또한 1세 전후의 역류지수도 현저한 차이를 보이므로, 향후 보다 많은 영유아들을 대상으로 조사 분석하여 1~2세 사이의 병적 역류의 기준 역류 지수를 5~10% 사이에서 더 세분하는 것이 필요할 것으로 생각된다.

• 대한골관절종양학회지
• /
• 제11권2호
• /
• pp.155-159
• /
• 2005

목적: 슬관절 주위 골연골종 환자의 병리적 증상과 슬내장이 동반되는 빈도 및 임상적 중요성을 알아보고자 하였다. 대상 및 방법: 1995년부터 2004년 사이에 슬관절 주위에 골연골종이 있어 제거술을 시행 받았던 20세 미만의 45예를 대상으로 후향적 연구를 하였다. 연령, 성별, 과거 병력, 가족력, 골연골종의 다발성 여부와 병리적 증상 및 슬내장의 원인 등을 조사하였다. 결과: 총 45예 중 슬내장은 9예(20%)에서 확인되었다. 다발성 골연골종은 4예이었으며, 1예에서 슬내장이 동반되었다. 병리적 증상 중 무통성 종괴가 39예로 가장 많았고, 이 중 9예는 슬내장으로 슬관절에 동통이 있었다. 슬내장의 원인은 반월상 연골판 파열이 7예, 병적 추벽 증후군이 2예이었고, 반월상 연골판 파열 중 4예는 원판형 연골이었다. 결론: 슬관절 주위 골연골종과 슬내장의 동반 발생에 대한 연관성은 부합적으로 사료되지 만, 그 빈도는 낮지 않은 것으로 판단되므로, 반드시 자기공명영상 등 특수 검사와 세심한 관찰을 해야 할 것이다.

• Advances in pediatric surgery
• /
• 제16권2호
• /
• pp.117-125
• /
• 2010

Unreduced small bowel intussusception requires operative treatment although the rate of spontaneous reduction is 60 to 70 %. The aim of this study is to compare clinical characteristics and outcome between spontaneous reduction and operation group and to analyze factors related to decisions to treat small bowel intussusceptions. The records of 25 patients with small bowel intussusceptions treated in Seoul National University Children's Hospital from January 1999 to August 2009 were reviewed respectively. Spontaneous reduction group (n=12, 48 %) had signs and symptoms of vomiting, abdominal pain, currant jelly stool, abdominal distension, fever, increased CRP but no rebound tenderness. One of them had been diagnosed with Henoch-Schonlein purpura and no one displayed pathologic leading point by image study. Operation group (n=13, 52 %) consisted of patients who had primary surgery. Their signs and symptoms were similar to spontaneous reduction group. Seven of them had underlying diseases such as Crohn' disease, ALL, Lymphoma, Peutz-Jeghers syndrome (n=3), post-transplanted state of liver and 2 of them displayed Peutz-Jeghers polyp and Meckel's diverticulum as pathologic leading point by preoperative ultrasonography. Mean relieve interval (interval between onset of symptoms and reduction/operation) was 1.78 days in spontaneous reduction group and 2.25 days in operation group (p=0.341). Seven of operation group had manual reduction and 6 out of 7 received segmental resection of the small bowel. No one of them underwent manual reduction and all of them underwent segmental resection were found to have pathologic leading points [Peutz-Jeghers polyp (n=3), Meckel's diverticulum (n=2), lymphoma (n=1)] during operation. In conclusion, 48% of small bowel intussusceptions resolved spontaneously. Patients' symptoms and relieve intervals were not related to the operative decisions. We therefore recommend significant factors for determining treatment plan such as change of clinical symptoms, underlying disease or pathologic leading point by imaging.

• Korean Journal of Radiology
• /
• 제20권5호
• /
• pp.812-822
• /
• 2019

Objective: To assess the diagnostic value of combining diffusion-weighted imaging (DWI) with conventional magnetic resonance imaging (MRI) for differentiating between pathologic and traumatic fractures at extremities from metastasis. Materials and Methods: Institutional Review Board approved this retrospective study and informed consent was waived. This study included 49 patients each with pathologic and traumatic fractures at extremities. The patients underwent conventional MRI combined with DWI. For qualitative analysis, two radiologists (R1 and R2) independently reviewed three imaging sets with a crossover design using a 5-point scale and a 3-scale confidence level: DWI plus non-enhanced MRI (NEMR; DW set), NEMR plus contrast-enhanced fat-saturated T1-weighted imaging (CEFST1; CE set), and DWI plus NEMR plus CEFST1 (combined set). McNemar's test was used to compare the diagnostic performances among three sets and perform subgroup analyses (single vs. multiple bone abnormality, absence/presence of extra-osseous mass, and bone enhancement at fracture margin). Results: Compared to the CE set, the combined set showed improved diagnostic accuracy (R1, 84.7 vs. 95.9%; R2, 91.8 vs. 95.9%, p < 0.05) and specificity (R1, 71.4% vs. 93.9%, p < 0.005; R2, 85.7% vs. 98%, p = 0.07), with no difference in sensitivities (p > 0.05). In cases of absent extra-osseous soft tissue mass and present fracture site enhancement, the combined set showed improved accuracy (R1, 82.9-84.4% vs. 95.6-96.3%, p < 0.05; R2, 90.2-91.1% vs. 95.1-95.6%, p < 0.05) and specificity (R1, 68.3-72.9% vs. 92.7-95.8%, p < 0.005; R2, 83.0-85.4% vs. 97.6-98.0%, p = 0.07). Conclusion: Combining DWI with conventional MRI improved the diagnostic accuracy and specificity while retaining sensitivity for differentiating between pathologic and traumatic fractures from metastasis at extremities.