1.Scoring System to Predict Malignancy for MRI-Detected Lesions in Breast Cancer Patients: Diagnostic Performance and Effect on Second-Look Ultrasonography
Young Geol KWON ; Ah Young PARK
Journal of the Korean Radiological Society 2020;81(2):379-394
Purpose:
To design a scoring system to predict malignancy of additional MRI-detected lesions in breast cancer patients.
Materials and Methods:
Eighty-six lesions (64 benign and 22 malignant) detected on preoperative MRI of 68 breast cancer patients were retrospectively included. The clinico-radiologic features were correlated with the histopathologic results using the Student's t-test, Fisher's exact test, and logistic regression analysis. The scoring system was designed based on the significant predictive features of malignancy, and its diagnostic performance was compared with that of the Breast Imaging-Reporting and Data System (BI-RADS) category.
Results:
Lesion size ≥ 8 mm (p < 0.001), location in the same quadrant as the primary cancer (p = 0.005), delayed plateau kinetics (p = 0.010), T2 isointense (p = 0.034) and hypointense (p = 0.024) signals, and irregular mass shape (p = 0.028) were associated with malignancy. In comparison with the BI-RADS category, the scoring system based on these features with suspicious non-mass internal enhancement increased the diagnostic performance (area under the receiver operating characteristic curve: 0.918 vs. 0.727) and detected three false-negative cases. With this scoring system, 22 second-look ultrasound examinations (22/66, 33.3%) could have been avoided.
Conclusion
The scoring system based on the lesion size, location relative to the primary cancer, delayed kinetic features, T2 signal intensity, mass shape, and non-mass internal enhancement can provide a more accurate approach to evaluate MRI-detected lesions in breast cancer patients.
2.Scoring System to Predict Malignancy for MRI-Detected Lesions in Breast Cancer Patients: Diagnostic Performance and Effect on Second-Look Ultrasonography
Young Geol KWON ; Ah Young PARK
Journal of the Korean Radiological Society 2020;81(2):379-394
Purpose:
To design a scoring system to predict malignancy of additional MRI-detected lesions in breast cancer patients.
Materials and Methods:
Eighty-six lesions (64 benign and 22 malignant) detected on preoperative MRI of 68 breast cancer patients were retrospectively included. The clinico-radiologic features were correlated with the histopathologic results using the Student's t-test, Fisher's exact test, and logistic regression analysis. The scoring system was designed based on the significant predictive features of malignancy, and its diagnostic performance was compared with that of the Breast Imaging-Reporting and Data System (BI-RADS) category.
Results:
Lesion size ≥ 8 mm (p < 0.001), location in the same quadrant as the primary cancer (p = 0.005), delayed plateau kinetics (p = 0.010), T2 isointense (p = 0.034) and hypointense (p = 0.024) signals, and irregular mass shape (p = 0.028) were associated with malignancy. In comparison with the BI-RADS category, the scoring system based on these features with suspicious non-mass internal enhancement increased the diagnostic performance (area under the receiver operating characteristic curve: 0.918 vs. 0.727) and detected three false-negative cases. With this scoring system, 22 second-look ultrasound examinations (22/66, 33.3%) could have been avoided.
Conclusion
The scoring system based on the lesion size, location relative to the primary cancer, delayed kinetic features, T2 signal intensity, mass shape, and non-mass internal enhancement can provide a more accurate approach to evaluate MRI-detected lesions in breast cancer patients.
3.Circulating immune complex in syphilis.
Min Geol LEE ; Ho KWAHCK ; Joo Young PARK ; Se Jong KIM ; Jung Bock LEE
Korean Journal of Dermatology 1991;29(4):481-490
No abstract available.
Antigen-Antibody Complex*
;
Syphilis*
4.Clinical Approach for the Treatment of Amblyopia in School Children.
Young Kil PARK ; Kyung Chul YOON ; Yeoung Geol PARK
Journal of the Korean Ophthalmological Society 2003;44(9):2091-2098
PURPOSE: To analyze the clinical aspects of amblyopia and the factors affecting the outcome of treatment of amblyopia in school children. METHODS: We retrospectively analyzed 100 patients, who had not been treated previously for amblyopia and been followed for more than 6 months after initiating the treatment of amblyopia. They were divided into two groups, one of which was 4~7 years old (50 patients)and the other was 8~12 years old (50 patients). The evaluation included causes of amblyopia, age and visual acuity at the initial treatment, degree of anisometropia, amount of deviation, and duration of treatment. RESULTS: Strabismus was the most common cause of amblyopia, followed by anisometropia and visual deprivation in that order. The causes of amblyopia did not affect the visual outcome either in the 8~12 years old children or in the 4~7 years old children (p=0.10). The factors not affecting visual outcome were visual acuity at the initial treatment (p=0.23), amount of deviation in strabismic amblyopia (p=0.16), degree of anisometropia in anisometropic amblyopia (p=0.49). Compared with the 4~7 years old children, the 8~12 years old chiliren did not show the significant difference in the final visual outcome (p=0.23). CONCLUSIONS: The treatment of amblyopia in school children was as effective as in pre-school children.
Amblyopia*
;
Anisometropia
;
Child*
;
Humans
;
Retrospective Studies
;
Strabismus
;
Visual Acuity
5.Long-term Follow-up Results of Partially Accommodative Esotropia After Near Geared Standard Surgery.
In Young JEONG ; Yeoung Geol PARK ; Sang Woo PARK
Journal of the Korean Ophthalmological Society 2008;49(4):628-633
PURPOSE: To analyze the long-term outcome of near geared standard surgery with full hyperopic correction for partially accommodative esotropia. METHODS: The medical records of a total of 24 patients with partially accommodative esotorpia, who had undergone bilateral or unilateral medial rectus recession were retrospectively reviewed. The amount of medial rectus recession was measured based on the near deviation after full hyperopic correction. During the follow-up period the changes of refractive error and angle of deviation were evaluated, and the titmus test and Worth 4-Dot test were performed. RESULTS: The mean ages were 36.63+/-13.38 months (14~59 months) at the time of wearing glasses and 61.25+/-25.55 months (25~132 months) at the time of operation. The average follow-up period was 59.67+/-32.12 months (18~120 months) and preoperative refractive errors were +3.93+/-1.73 D sph and refractive errors at final visit were +3.64+/-2.07 D sph (P=0.53). The mean amount of esodeviation were 26.08+/-8.13PD and 4.25+/-6.63PD for pre- and post-operatively respectively. Nineteen patients showed postoperative deviation of 10PD or less, one patient was overcorrected, and four patients were undercorrected. Worth 4-Dot test resulted in a fusion response at near and far in one patient preoperatively and in 17 patients postoperatively (P=0.30). A titmus stereotest of less than 100 seconds of arc resulted in 1 of 7 patients and 6 of 14 patients at the time of preoperation and postoperation each (P=0.34). The results were not statistically significant. Four of ten high hyperopic patients (> or = +4.00 diopter) had under- or over-correction (P=0.12), though it was not statistically significant. There were no significant differences in combined conditions. CONCLUSIONS: Near geared standard surgery with full hyperopic correction in partially accommodative esotropia patients gave a good surgical result for patients in the mean follow-up duration of 59.67 months.
Esotropia
;
Eyeglasses
;
Follow-Up Studies
;
Glass
;
Humans
;
Medical Records
;
Refractive Errors
;
Retrospective Studies
6.A Case Report of Simplified Cosmetical Correction of Post-Exenterated State.
Sang Ki JEONG ; Young Min PARK ; Yeoung Geol PARK
Journal of the Korean Ophthalmological Society 1997;38(6):1084-1087
Orbital exenteration has been used as a corrective method to treat lifetreatening neoplasm, life-threatening infection, and pain or deformity. After orbital exenteration, patients have been left with a severely disfiguring facial defect. Nowadays postoperative adjustment is usually better than before, with improved surgical and prosthesis manufacturing techniques. Actually Korean ophthalmologists do not have chances of adequate ocular prosthesis support compared to the other foreign countries. Authors experienced satisfying cosmetic result using a photography glasses frame for the pos-exenterated patient who had a squamous cell carcinoma of the orbit. We report this first case in Korea with review of the literatures.
Carcinoma, Squamous Cell
;
Congenital Abnormalities
;
Eye, Artificial
;
Eyeglasses
;
Glass
;
Humans
;
Korea
;
Orbit
;
Photography
;
Prostheses and Implants
7.Intracranial hemorrhage induced uncontrolled seizure in a deceased donor liver transplant patient: a case report.
Seung Young OH ; Hannah LEE ; Yang Hyo PARK ; Ho Geol RYU
Korean Journal of Anesthesiology 2016;69(5):527-531
Seizure is the second most common neurologic complication after liver transplantation and may be caused by metabolic abnormalities, electrolyte imbalance, infection, and immunosuppressant toxicity. A 61-year-old male patient underwent liver transplantation due to hepatitis B virus-related liver cirrhosis with portal systemic encephalopathy. The immediate postoperative course of the patient was uncomplicated. However, on postoperative day (POD) 6, weakness developed in both lower extremities. No abnormal findings were detected on a brain computed tomography (CT) scan on POD 8, but a generalized tonic clonic seizure developed which was difficult to control even with multiple antiepileptic drugs. A follow-up brain CT scan on POD 15 showed a 2.7 cm sized acute intracranial hemorrhage (ICH) in the left parietal lobe. The patient's mental status improved after 2 months and he was able to communicate through eye blinking or head shaking. Our case reports an acute ICH that manifested into a refractory seizure in a patient who underwent a liver transplant.
Anticonvulsants
;
Blinking
;
Brain
;
Brain Diseases
;
Follow-Up Studies
;
Head
;
Hepatic Encephalopathy
;
Hepatitis B
;
Humans
;
Intracranial Hemorrhages*
;
Liver Cirrhosis
;
Liver Transplantation
;
Liver*
;
Lower Extremity
;
Male
;
Middle Aged
;
Parietal Lobe
;
Seizures*
;
Tissue Donors*
;
Tomography, X-Ray Computed
8.Surgical Results of Repeat Penetrating Keratoplasty and Risk Factors for Graft Failure.
Kyung Chul YOON ; Young Kil PARK ; Yeong Geol PARK
Journal of the Korean Ophthalmological Society 2004;45(11):1827-1832
PURPOSE: To evaluate the primary indications, surgical outcomes, causes and risk factors for failure in patients with repeat corneal transplantation. METHODS: We retrospectively analyzed indications for the initial corneal graft, best corrected visual acuity, survival period, corneal clarity, cause and risk factor for failure in 42 patients (45 eyes) who underwent repeat penetrating keratoplasty with a minimum follow-up period of 6 months. RESULTS: The most common primary indications were herpes simplex keratitis (21.4%), followed by corneal scar (19.0%) and pseudophakic bullous keratopathy (9.0%). The average period of repeat corneal transplantation was 19.1 +/- 24.9 months. The most common cause of the failure of penetrating keratoplasty was allograft rejection(79.3%). The risk factors of graft failure were corneal neovascularization, chronic inflammation and the number of regrafts. CONCLUSION: The most common primary indication of repeat corneal transplantation was herpes simplex keratitis. The mean survival period was about 19 months. The factors that appeared to influence the survival period of repeat corneal transplantation were the corneal neovascularization, chronic inflammation and the number of regrafts.
Allografts
;
Cicatrix
;
Corneal Neovascularization
;
Corneal Transplantation
;
Follow-Up Studies
;
Humans
;
Inflammation
;
Keratitis, Herpetic
;
Keratoplasty, Penetrating*
;
Retrospective Studies
;
Risk Factors*
;
Transplants*
;
Visual Acuity
9.Clinical Analysis of Strabismus in Twin.
Kyung Chul YOON ; Hyun Kyung KIM ; Hong Young PARK ; Yeoung Geol PARK
Journal of the Korean Ophthalmological Society 2003;44(7):1584-1591
PURPOSE: To evaluate the genetic factor in development of comitant strabismus. METHODS: We retrospectively reviewed 48 patients of 24 twins classified into monozygotic or dizygotic twin and analyzed gestational period and birth weight, refraction, phenotype and age of onset, amount of deviation, surgical history, and associated systemic or other ocular anomaly except strabismus. RESULTS: Seventeen of the 24 twins (70.8%) showed phenotypic concordance. The concordance was significantly higher in monozygotic twins (15 of the 18 pairs, 83.3%) than in dizygotic twins (2 of the 6 pairs, 33.3%) (p=0.038). Out of 15 twins with monozygosity who showed concordance, the predominant phenotype was intermittent exotropia (9 pairs, 60.0%). Concordance rate according to phenotype was high in refractive or nonrefractive accommodative esotropia (3 of the 3 pairs, 100.0%) and intermittent exotropia (9 of the 10 pairs, 90.0%). Most of concordant pairs showed similarity in age of onset and amount of deviation between first and second child. CONCLUSIONS: The concordance rate in monozygotic twin was high, especially in refractive or nonrefractive accommodative esotropia and intermittent exotropia, and therefore genetic factor can be responsible for the development of these types of strabismus.
Age of Onset
;
Birth Weight
;
Child
;
Esotropia
;
Exotropia
;
Humans
;
Phenotype
;
Retrospective Studies
;
Strabismus*
;
Twins*
;
Twins, Dizygotic
;
Twins, Monozygotic
10.Clinical analysis of surgical management for cystic neoplasms of pancreas.
Keun Hong PARK ; Sang Geol KIM ; Deok Bok MOON ; Jong Hun PARK ; Yun Jin HWANG ; Young Kook YUN
Korean Journal of Hepato-Biliary-Pancreatic Surgery 2000;4(2):177-187
BACKGROUND: Cystic neoplasms of pancreas comprise pathologically heterogeneous groups of tumors with many shared clinical features. Although relatively uncommon, they have a very important place in the surgical pathology of the pancreas because of their high cure rate and their potential confusion with far more common pancreatic pseudocysts. METHODS: We analysed clinical features of 23 patients with pancreatic cystic neoplasm that we treated within 8-years` period (13 women, 10 men, mean age; 47.2 years old) The cystic neoplasms of pancreas comprise 5 serous cystadenoma, 3 benign mucinous cystic tumor, 3 borderline malignancy of mucinous cystic tumor and 4 mucinous cystadenocarcinoma, 4 papillary cystic tumor, 1 cystic teratoma, 1 cystic mesothelioma, 1 lymphoepithelial cyst. 1 mucinous ductal ectasia. RESULTS: Mean tumor size was 6.8cm(3 to 15cm). 73.9 percent had abdominal pain and 26.1 percent had abdominal mass. Computed tomography, ultrasonography and MRI were useful in detecting cystic mass in all cases but was not reliable to distinguish serous from mucinous tumor, benign from malignant. For the treatment of the tumor, 17 distal pancreatectomy with splenectomy, 1 distal pancreatectomy with spleen preserving, 1 proximal pancreatic resection, 2 local excision of pancreas and 1 PPPD were performed. During the period of follow up (mean: 29 months) after surgical resection, 1 recurrence occurred in the patient who underwent local excision for mucinous cystic tumor showing borderline malignancy on histologic finding. All the patients are alive except 2 patients who were lost to follow-up. CONCLUSION: Pancreatic cystic neoplasms are rare and their prognosis are acceptable when they are treated early and properly. So early detection and surgical treatment is the mainstay of management of cystic neoplasm of pancreas.
Abdominal Pain
;
Cystadenocarcinoma, Mucinous
;
Cystadenoma, Serous
;
Dilatation, Pathologic
;
Female
;
Follow-Up Studies
;
Humans
;
Lost to Follow-Up
;
Magnetic Resonance Imaging
;
Male
;
Mesothelioma, Cystic
;
Mucins
;
Pancreas*
;
Pancreatectomy
;
Pancreatic Cyst
;
Pancreatic Pseudocyst
;
Pathology, Surgical
;
Prognosis
;
Recurrence
;
Spleen
;
Splenectomy
;
Teratoma
;
Ultrasonography