Publications by authors named "Yoon-Hee Choo"

4 Publications

  • Page 1 of 1

Extremely delayed solitary cerebral metastasis in patient with T1N0M0 renal cell carcinoma after radical nephrectomy: Case report and literature review.

Medicine (Baltimore) 2021 Apr;100(15):e25586

Department of Pathology, Yeungnam University Hospital, Yeungnam University College of Medicine Daegu, Republic of Korea.

Rationale: Although renal cell carcinoma (RCC) is one of the common origins of brain metastasis, few cases of extremely delayed brain metastasis from RCC, more than 10 years after nephrectomy, have been reported. We present a rare case of extremely delayed brain metastasis from RCC, also performed a literature review to increase knowledge of the characteristics for extremely delayed brain metastasis from RCC.

Patient Concerns: A 72-year-old man presented with right-sided hemiplegia and dysarthria. The patient had a history of radical nephrectomy for RCC with stage T1N0M0 15 years earlier.

Diagnosis: Magnetic resonance imaging with contrast revealed a 2-cm sized non-homogenous enhanced mass in the left frontal lobe with peritumoral edema. The pathological examination after surgery reported metastatic clear cell RCC.

Interventions: A craniotomy for removal of the mass was performed at the time of diagnosis. Stereotactic radiosurgery was performed for the tumor bed 3 weeks after craniotomy, and then, chemotherapy was started 2 months after the SRS.

Outcomes: Metastasis progressed to multiple organs 6 months after the craniotomy. The patient chose a hospice and no longer visited the hospital.

Lessons: In cases with a history of nephrectomy for RCC, long period follow-up is necessary for monitoring RCC brain metastasis and pathologic diagnosis should be confirmed.
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http://dx.doi.org/10.1097/MD.0000000000025586DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8052049PMC
April 2021

Calvarial Tuberculosis Presenting with Skin Defect in an Elderly Patient.

World Neurosurg 2020 08 16;140:267-270. Epub 2020 May 16.

Department of Pathology, Yeungnam University Hospital, Yeungnam University College of Medicine, Daegu, South Korea.

Background: Tuberculosis is a common disease; however, the prevalence of calvarial tuberculosis is very rare. Most cases of calvarial tuberculosis occur in young patients. We report a rare case of calvarial tuberculosis in an elderly patient.

Case Description: An 89-year-old woman presented with a forehead skin defect. Radiologic imaging showed bony erosion 20 × 10 mm in size with adjacent dural enhancement in the left frontal bone. The patient underwent surgical treatment. Pathology revealed chronic granulomatous inflammation with caseous necrosis, consistent with tuberculosis. Antituberculous medications were prescribed for 6 months.

Conclusions: A careful assessment should be performed to obtain an appropriate diagnosis in cases of osteolytic lesions of the skull.
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http://dx.doi.org/10.1016/j.wneu.2020.05.076DOI Listing
August 2020

Efficacy of dual antiplatelet therapy as premedication before diagnostic cerebral digital subtraction angiography.

J Cerebrovasc Endovasc Neurosurg 2019 Sep 30;21(3):131-137. Epub 2019 Sep 30.

Department of Neurosurgery, Yeungnam University College of Medicine, Daegu, Republic of Korea.

Objective: Several studies have reported that periprocedural dual antiplatelet therapy lowers the incidence of thromboembolic complications (TEC) associated with coiling of unruptured aneurysms. We hypothesized that preprocedural administration of dual antiplatelet agents (aspirin and cilostazol) for 7days may reduce the risk of complications associated with diagnostic cerebral digital subtraction angiography (DSA).

Methods: We retrospectively reviewed the records of patients who underwent diagnostic cerebral DSA between September 2015 and April 2018. Of the 419 patients included (149 men, 270 women, mean age 58.5 years), 221 (72 men, 149 women, mean age 57.8 years) who underwent cerebral DSA between September 2015 and June 2016 were not premedicated with antiplatelet therapy. The remaining 198 (77 men, 121 women, mean age 59.4 years) who underwent cerebral DSA between July 2016 and April 2018 were premedicated with dual antiplatelet therapy (aspirin and cilostazol). We defined ischemic stroke as a cerebral DSA-induced complication identified on magnetic resonance imaging (MRI) among patients with neurological symptoms.

Results: Of the 221 patients who did not receive antiplatelet therapy, 210 (95.0%) showed no neurological symptoms; however, 11 (5.0%) developed neurological symptoms with MRI-proven ischemic stroke, which represents a TEC. Of the 198 patients who received dual antiplatelet therapy, 196 patients (99.0%) showed no evidence of TEC. The remaining 2 (1.0%) developed diplopia and motor weakness each, and MRI confirmed acute ischemic stroke (p=0.019).

Conclusions: The use of dual antiplatelet agents (aspirin and cilostazol) for 7 days before DSA may reduce the risk of cerebral DSA-induced TEC.
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http://dx.doi.org/10.7461/jcen.2019.21.3.131DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6911932PMC
September 2019

Investigation of Symptomatic Unstable Changes of Non-Fused Component in the Mixed-Type Cervical Ossification of Posterior Longitudinal Ligament Using Dynamic Magnetic Resonance Imaging: A Case Report.

Korean J Neurotrauma 2018 Oct 31;14(2):164-168. Epub 2018 Oct 31.

Department of Neurosurgery, Yeungnam University Medical Center, Yeungnam University College of Medicine, Daegu, Korea.

A 43-year-old man was transferred to our hospital with recurring myelopathic symptoms after previous anterior and posterior surgical decompressions for mixed-type cervical ossification of the posterior longitudinal ligament (OPLL). Conventional magnetic resonance imaging (MRI) showed a preserved cervical curve and the achievement of successful decompression after the previous surgeries. The patient's symptoms were aggravated when he was in the extended neck posture. Dynamic MRI performed with the patient in an extended neck position revealed cord compression by OPLL from C3 to C4 with newly developed retrolisthesis of the C4-5 segment. We recommend the use of dynamic MRI to investigate motion-dependent cord compression caused by instability of the non-fused OPLL component.
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http://dx.doi.org/10.13004/kjnt.2018.14.2.164DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6218338PMC
October 2018