1.Internal Carotid Artery Pseudoaneurysm Secondary to Skull Base Osteomyelitis: A Case Report
Hyung Joon CHO ; Wonsoo SON ; JiHoon LEE ; Da Jung JUNG
Journal of Audiology & Otology 2022;26(1):50-54
We report a case of a pseudoaneurysm secondary to skull base osteomyelitis (SBO) in an 82-year-old female. The patient was hospitalized with an acute episode of bleeding from the right ear, which persisted despite packing placed in the ear. We suspected bleeding from the internal carotid artery (ICA) and performed angiography, which revealed a pseudoaneurysm that presumably developed secondary to invasion of the wall of the petrous segment of the right ICA, and the patient underwent emergency coil embolization. Bleeding from the ear recurred a week later, and we performed repeat angiography, followed by embolization and deployment of multiple stents at the site of the pseudoaneurysm, which controlled the bleeding. Clinicians should be mindful of a pseudoaneurysm as a rare complication of SBO, following the spread of infection to adjacent soft tissues or vessels. A pseudoaneurysm should be considered in the differential diagnosis in patients with recurrent epistaxis or bleeding from the ears in addition to cranial nerve symptoms, and this condition warrants urgent evaluation.
2.Retinal Microvascular Abnormalities in Patients with Type I Neurofibromatosis
Hyung Jun CHOI ; Jung Hyun YOON ; Byeong Jae SON ; Su Kyeong HWANG ; Bo Young CHUN
Journal of the Korean Ophthalmological Society 2021;62(2):266-272
Purpose:
To evaluate the findings and frequencies of retinal microvascular abnormalities observed in patients with type 1 neurofibromatosis.
Methods:
Fundus photographs of 61 patients with type 1 neurofibromatosis and 61 controls without systemic disease or ophthalmic abnormalities were retrospectively compared and analyzed. The presence or absence of retinal microvascular abnormalities in the form of simple vascular tortuosity, corkscrew retinal vessels, and moyamoya-like patterns was confirmed, and the diagnostic sensitivity, diagnostic specificity, positive predictive value, negative predictive value, and diagnostic accuracy for type 1 neurofibromatosis were analyzed.
Results:
Retinal microvascular abnormalities were found in 19.7% (12 patients) of the patient group, There was no cases in the control group, thus. The difference between the patient group and the control group was significant (p = 0.0003). Of the 12 patients with abnormalities, 10 exhibited simple vascular tortuosity, one had corkscrew retinal vessels, and one exhibited both findings. The diagnostic sensitivity of retinal microvascular abnormalities for type 1 neurofibromatosis was 23.53%, the diagnostic specificity was 100%, the positive predictive value was 100%, and the negative predictive value was 61%. The diagnostic accuracy was 65.18%, which was slightly lower than the 79.5% diagnostic accuracy for the Lisch nodule, but the diagnostic accuracy was comparable to that of neurofibroma (68.03%).
Conclusion
Retinal microvascular abnormalities were observed in 19.7% of type 1 neurofibromatosis patients, of which simple vascular tortuosity was the most common. Considering that retinal microvascular abnormalities were not observed at all in the control group, and the diagnostic accuracy was 65.18%, this type of abnormality could be included as a new ophthalmic clinical feature of type 1 neurofibromatosis.
3.Renal outcomes of laparoscopic versus open surgery in patients with rectal cancer: a propensity score analysis
Jin Hyuk PAEK ; Sung Il KANG ; Jiwon RYU ; Sung Yoon LIM ; Ji Young RYU ; Hyung Eun SON ; Jong Cheol JEONG ; Ho Jun CHIN ; Ki Young NA ; Dong-Wan CHAE ; Sung-Bum KANG ; Sejoong KIM
Kidney Research and Clinical Practice 2021;40(4):634-644
Background:
A laparoscopic approach is widely used in abdominal surgery. Although several studies have compared surgical and oncological outcomes between laparoscopic surgery (LS) and open surgery (OS) in rectal cancer patients, there have been few studies on postoperative renal outcomes.
Methods:
We conducted a retrospective cohort study involving 1,633 patients who underwent rectal cancer surgery between 2003 and 2017. Postoperative acute kidney injury (AKI) was diagnosed according to the serum creatinine criteria of the Kidney Disease: Improving Global Outcomes classification.
Results:
Among the 1,633 patients, 1,072 (65.6%) underwent LS. After matching propensity scores, 395 patients were included in each group. The incidence of postoperative AKI in the LS group was significantly lower than in the OS group (9.9% vs. 15.9%; p = 0.01). Operation time, estimated blood loss, and incidence of transfusion in the LS group were significantly lower than those in the OS group. Cox proportional hazard models revealed that LS was associated with decreased risk of postoperative AKI (hazard ratio [HR], 0.599; 95% confidence interval [CI], 0.402–0.893; p = 0.01) and postoperative transfusion was associated with increased risk of AKI (HR, 2.495; 95% CI, 1.529–4.072; p < 0.001). In the subgroup analysis, the incidence of postoperative AKI in patients with middle or high rectal cancer who underwent LS was much lower than in those who underwent OS (HR, 0.373; 95% CI, 0.197–0.705; p = 0.002).
Conclusion
This study showed that LS may have a favorable effect on the development of postoperative AKI in patients with rectal cancer.
4.Long-term effects of the mean hemoglobin A1c levels after percutaneous coronary intervention in patients with diabetes
Jaekyung BAE ; Ji-Hyung YOON ; Jung-Hee LEE ; Jong-Ho NAM ; Chan-Hee LEE ; Jang-Won SON ; Ung KIM ; Jong-Seon PARK ; Dong-Gu SHIN
The Korean Journal of Internal Medicine 2021;36(6):1365-1376
Background/Aims:
The clinical benefit of strict blood glucose-lowering therapy for patients with coronary artery disease (CAD) is still debated. We aimed to evaluate the long-term outcomes of patients with diabetes who underwent percutaneous coronary intervention (PCI), according to the mean hemoglobin A1c (HbA1c) level after PCI.
Methods:
We evaluated 675 diabetes patients with CAD treated with PCI. We categorized the study population into three groups based on the mean observed HbA1c levels during the follow-up duration, as follows: aggressive control (AC) group (HbA1c level < 6.5%, n = 148), moderate control (MC) group (HbA1c level ≥ 6.5% and < 7.0%, n = 138), and uncontrolled (UC) group (HbA1c level ≥ 7.0%, n = 389). The primary endpoint was major adverse cardiovascular and cerebrovascular events (MACCEs), defined as cardiac death, myocardial infarction, repeat target vessel revascularization, and stroke.
Results:
The mean HbA1c level of the AC group was significantly lower than that of the MC and UC groups (6.04% ± 0.36% vs. 6.74% ± 0.14% vs. 8.39% ± 1.20%, p < 0.001). The incidence of MACCEs was significantly lower in the AC group than in the MC and UC groups (16.0% vs. 24.3% vs. 26.3%, p = 0.010), mostly driven by the incidence of stroke (4.4% vs. 14.0% vs. 11.4%, p = 0.013). Multivariate Cox regression analysis showed that only the AC group was associated with a reduced rate of MACCEs (hazard ratio, 0.499; 95% confidence interval, 0.316 to 0.786; p = 0.004) compared with the UC group.
Conclusions
Our study showed that intensive glycemic control (HbA1c level < 6.5%) is associated with improved clinical outcomes after PCI in patients with diabetes.
5.Blepharoptosis Secondary to Local Conjunctival and Tarsal Amyloidosis
Hyung Jun CHOI ; Byeong Jae SON
Journal of the Korean Ophthalmological Society 2020;61(8):950-954
Purpose:
To report a case of primary conjunctival and tarsal amyloidosis with blepharoptosis.Case summary: A 73-year-old woman presented with left blepharoptosis and foreign body sensation that worsened over a1-year period prior. She presented with severe blepharoptosis on the left upper lid, with slightly reduced levator function. Duringthe operation, a fragile yellowish-pink mass-lesion was observed, widely involving palpebral conjunctiva and the space betweenthe levator aponeurosis and tarsal plate. While levator resection was withheld, the mass was excised as much as possible andblepharoplasty was performed. After surgery, the blepharoptosis improved slightly, and histopathologic examination revealedamyloid deposits. Because there were no abnormal findings in systemic examinations including blood tests, chest X-rays, andabdominal ultrasonography, the patient was diagnosed as primary conjunctival and tarsal amyloidosis.
Conclusions
Although local amyloidosis of the conjunctiva and tarsal plate is rare, it should be considered in differential diagnosisof patients with involutional blepharoptosis.
6.Serum levels of carbohydrate antigen 125 in combination with N-terminal pro-brain natriuretic peptide in patients with acute decompensated heart failure
Jae Yong YOON ; Dong Heon YANG ; Hyun Jun CHO ; Nam Kyun KIM ; Chang Yeon KIM ; Jihyun SON ; Jae Hyung ROH ; Se Yong JANG ; Myung Hwan BAE ; Jang Hoon LEE ; Hun Sik PARK ; Yongkeun CHO ; Shung Chull CHAE
The Korean Journal of Internal Medicine 2019;34(4):811-818
BACKGROUND/AIMS:
Carbohydrate antigen 125 (CA-125) is an emerging prognostic biomarker for heart failure. We aimed to test the long-term prognostic value of CA-125 in combination with N-terminal pro-brain natriuretic peptide (NT-proBNP) in patients with acute decompensated heart failure (ADHF).
METHODS:
This observational study included a total of 413 patients (64.1 ± 15.6 year-old, 214 men) with ADHF. All-cause mortality during the 2-year follow-up was investigated for the prognosis.
RESULTS:
During the follow-up (mean follow-up, 591 ± 233 days), 109 deaths (26.0%) were recorded. In the multivariable analysis model, CA-125 was an independent factor associated with all-cause mortality (log CA-125: hazard ratio, 1.23; 95% confidence interval, 1.02 to 1.48; p = 0.030) together with age, sex, New York Heart Association class, β-blocker, and NT-proBNP. The Kaplan-Meier survival analysis demonstrated that the group with both low marker levels showed the best 2-year survival (87.9%) followed by the group with low NT-proBNP and high CA-125 (76.1%), high NT-proBNP and low CA-125 (64.7%) and high NT-proBNP and high CA-125 levels (54.3%) (p < 0.001). Addition of CA-125 in combination with NT-proBNP and established risk factors further increased the predictive power for mortality in patients with ADHF.
CONCLUSIONS
CA-125 was an independent factor associated with all-cause mortality in patients with ADHF. Combination of CA-125 with NT-proBNP significantly improved the prediction of mortality in patients with ADHF.
7.Influence of abutment height and convergence angle on the retrievability of cement-retained implant prostheses with a lingual slot
Kyu Hyung CHOI ; KeunBaDa SON ; Du Hyeong LEE ; Kyu Bok LEE
The Journal of Advanced Prosthodontics 2018;10(5):381-387
PURPOSE: Cement-retained implant prostheses can lack proper retrievability during repair, and residual cement can cause peri-implantitis. The purpose of this in vitro study was to evaluate the influence of abutment height and convergence angle on the retrievability of cement-retained implant prostheses with lingual slots, known as retrievable cement-type slots (RCS). MATERIALS AND METHODS: We fabricated six types of titanium abutments (10 of each type) with two different heights (4 mm and 6 mm), three different convergence angles (8°, 10°, and 12°), a sloped shoulder margin (0.6 mm depth), a rectangular shape (6 mm × 6.5 mm) with rounded edges, and a rectangular ledge (2 mm × 1 mm) for the RCS. One monolithic zirconia crown was fabricated for each abutment using a dental computer-aided design/computer-aided manufacturing system. The abutments and crowns were permanently cemented together with dual-curing resin cement, followed by 24 hours in demineralized water at room temperature. Using a custom-made device with a slot driver and torque gauge, we recorded the torque (N·cm) required to remove the crowns. Statistical analysis was conducted using multiple regression analysis and Mann-Whitney U tests (α=.05). RESULTS: Removal torques significantly decreased as convergence angles increased. Multiple regression analysis showed no significant interaction between the abutment height and the convergence angle (Durbin-Watson ratio: 2.186). CONCLUSION: Within the limitations of this in vitro study, we suggest that the retrievability of cement-retained implant prostheses with RCS can be maintained by adjusting the abutment height and convergence angle, even when they are permanently cemented together.
Crowns
;
In Vitro Techniques
;
Peri-Implantitis
;
Prostheses and Implants
;
Resin Cements
;
Shoulder
;
Titanium
;
Torque
;
Water
8.Acute Longus Colli Tendinitis without Calcification.
Chul Hyung KANG ; Eun Seok SON ; Du Hwan KIM ; Hyung Gyu JANG
The Journal of the Korean Orthopaedic Association 2015;50(3):264-267
Calcific tendinitis of the longus colli is an inflammatory disease caused by calcium hydroxyapatite crystal deposition in the longus colli tendon of the prevertebral space. It is also known as retropharyngeal calcific tendinitis or prevertebral tendinitis. The typical imaging characteristics of this entity are calcifications on the superior insertion of the longus colli tendons at the C1-2 level and fluid collection in the retropharyngeal space. However, we introduce a case of acute longus colli tendinitis without definite calcification deposition on image findings.
Durapatite
;
Tendinopathy*
;
Tendons
9.Fourth and Fifth Metacarpal Base Arthrodesis for Posttraumatic Arthritis of Fifth Carpometacarpal Joint.
Chul Hyung KANG ; Eun Sok SON ; Chul Hyun CHO
Journal of the Korean Society for Surgery of the Hand 2013;18(4):184-188
Posttraumatic arthritis of the fifth carpometacarpal joint occurs as a sequelae of intraarticular comminuted fracture or missed and untreated fracture. If it is inappropriately managed, persistent pain and functional disability of the hand can occur. Arthrodesis, resection arthroplasty, or interposition arthroplasty has been reported as the treatment for the arthritis. However, outcome studies for operative treatment of the fifth carpometacarpal arthritis have been rarely reported. We report a case of the fifth carpometacarpal arthritis occurred after missed fracture, which was successfully treated with fourth, fifth metacarpal base arthrodesis.
Arthritis*
;
Arthrodesis*
;
Arthroplasty
;
Carpometacarpal Joints*
;
Fractures, Comminuted
;
Hand
;
Outcome Assessment (Health Care)
10.Surgical Treatment of T1-2 Disc Herniation with T1 Radiculopathy: A Case Report with Review of the Literature.
Eun Seok SON ; Sang Hun LEE ; So Young PARK ; Ki Tack KIM ; Chul Hyung KANG ; Seong Woo CHO
Asian Spine Journal 2012;6(3):199-202
The prevalence of intervertebral disc herniation (IDH) of the thoracic spine is rare compared to the cervical or lumbar spine. In particular, IDH of the upper thoracic spine is extremely rare. We report the case of T1-2 IDH and its treatment, with a literature review. A 37-year-old male patient visited our hospital due to radiating pain at the left upper extremity and weakness of grip power. In cervical spine magnetic resonance images, T1-2 disc space showed herniated disc material and compressed T1 root was identified. Laminoforaminotomy was performed with a posterior approach. The radiating pain and weakness of grip power improved immediately after the surgery. Of patients who show radiating pain or numbness at the medial aspect of forearm, or weakness of intrinsic muscle of hand, can be suspected to have T1 radiculopathy. A detailed physical examination and a radiologic evaluation including this area should be required for the T1 radiculopathy.
Adult
;
Forearm
;
Hand
;
Hand Strength
;
Humans
;
Hypesthesia
;
Intervertebral Disc
;
Intervertebral Disc Displacement
;
Laminectomy
;
Magnetic Resonance Spectroscopy
;
Male
;
Muscles
;
Physical Examination
;
Prevalence
;
Radiculopathy
;
Spine
;
Thoracic Vertebrae
;
Upper Extremity

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