• 대한핵의학회지
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• 제38권3호
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• pp.268-271
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• 2004

A 43-year-old man was presented with persistent headache for two weeks. 72 weighted MR imaging showed high signal intensity with surrounding edema in the left frontal lobe. These findings were considered with intracranial tumor such as glioma or metastasis. Tc-99m tetrofosmin SPECT showed focal radiotracer accumulation in the left frontal lobe. The operative specimen contained cerebral infarction with organizing leptomeningeal hematoma by pathologist. Another 73-year-old man was hospitalized for chronic headache. Initial CT showed ill-defined hypodensity with mass effect in the right parietal lobe. Tc-99m tetrofosmin SPECT showed focal radiotracer uptake in the right parietal lobe. These findings were considered with low-grade glioma or infarction. Follow-up CT after 5 months showed slightly decreased in size of low density in the right parietal lobe, and cerebral infarction is more likely than others. Tc-99m tetrofosmin has been proposed as a cardiotracer of myocardial perfusion imaging and an oncotropic radiotracer. Tc-99m tetrofosmin SPECT image provides a better attractive alternative agent than T1-201 as a tumor-imaging agent, with characteristics such as high-energy flux, short half-life, favorable biodistribution, dosimetry and lower background radioactivity. We have keep in mind on the analysis of Tc-99m tetrofomin imaging when cerebral infarction is being differentiated from brain tumor.

• 대한영상의학회지
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• 제85권4호
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• pp.785-788
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• 2024

T2-fluid attenuation inversion recovery (이하 FLAIR) mismatch sign은 isocitrate dehydrogenase-mutant 성상세포종을 시사하는 영상 소견으로 알려져 있다. 이 증례 보고에서는 유방암 환자의 뇌에 생긴 점액성 뇌전이암이 T2-FLAIR mismatch sign처럼 보이는 사례를 소개한다. 특히 비조영증강 MRI에서 T2-FLAIR mismatch sign을 보이는 경우, 성상세포종 뿐만 아니라 뇌전이암을 감별진단에 염두에 두어야 한다.

• Journal of Korean Neurosurgical Society
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• 제48권3호
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• pp.263-267
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• 2010

Although cerebellar hemangioblastomas are histopathologically benign, they yield a degree of malignant clinical behavior in long-term follow-up. We present two cases of long-term progression of renal cell carcinoma, which had been diagnosed as renal cysts during treatment for cerebellar hemangioblastoma. A 14-year-old male with von Hippel-Lindau disease was admitted for a cerebellar hemangioblastoma with multiple spinal hemangioblastomas and a renal cyst. After primary total resection of the cerebellar hemangioblastoma, the patient required two further surgeries after 111 and 209 months for a recurrent cerebellar hemangioblastoma. Furthermore, he underwent radical nephrectomy as his renal cyst had progressed to renal cell carcinoma 209 months after initial diagnosis. A 26-year-old male presented with multiple cerebellar hemangioblastomas associated with von Hippel-Lindau disease and accompanied by multiple spinal hemangioblastomas and multiple cystic lesions in the liver, kidney, and pancreas. He underwent primary resect'lon of the cerebellar hemangioblastoma in association with craniospinal radiation for multiple intracranial/spinal masses. Unexpectedly, a malignant glioma developed 83 months after discovery of the cerebellar hemangioblastoma. At the same time, renal cell carcinoma, which had developed from an initial renal cyst, was diagnosed, and a radical nephrectomy was performed. In the view of long term clinical course, cerebellar hemangioblastoma associated with von Hipple-Lindau disease may redevelop even after primary total resection. In addition, associated lesions such as renal cysts may also progress to malignancy after the passing of a sufficient length of time.

• Journal of Korean Neurosurgical Society
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• 제44권3호
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• pp.146-150
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• 2008

Objective : The authors reviewed the experience of 19 patients with orbital tumors and summarize the clinical features, surgical treatment and outcomes. Methods : The authors searched the database for all patients who underwent surgery for the treatment of orbital tumors at a single institution between 1999 and 2007. Data from clinical notes, surgical reports, and radiological findings were obtained for the analysis. Results : Orbital tumors constituted a heterogenous array of histopathology. The presenting symptoms were exophthalmos (52.6%), visual disturbance (26.3%) and pain (21.1%). The surgical approaches used were transcranial in 17 patients. Tumors located in the intraconal or perioptic space were surgically excised using a frontoorbital approach (8 cases). while pterional (3 cases). orbital (2 cases) and combined approaches (6 cases) were used for tumors in other sites. Total resection of tumors was achieved in 12 of 19 patients. In 4 patients with glioma and lymphoma only diagnostic biopsy was done. Three patients experienced visual deterioration postoperatively. Two patients had temporary diplopia, and one patient had temporary ptosis. Conclusion : Surgical treatment could be the mainstay of therapy for the majority of symptomatic orbital tumors. Many orbital tumors can be treated safely via a transcranial approach. Frontoorbital approach allows the surgeon to reach both the intraorbital and intracranial structures. Knowledge of the microanatomy of the orbit and meticulous surgical skills are necessary to overcome the pitfalls of intraorbital surgery.

• 대한영상의학회지
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• 제79권5호
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• pp.294-301
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• 2018

상의하세포종은 드문 중추신경계 종양으로 두개내 발생하는 종양의 0.7%를 차지한다. 두개내 상의하세포종은 위치에 따라 특징적인 MR 소견을 보여주는데 가끔 비전형적인 소견도 존재할 수 있다. 또한 매우 드물게는 척수내에 발생하기도 한다. 우리는 각각 뇌실내 위치에도 불구하고 비전형적인 소견을 보인 경우와 드물게 척수 내에 나타난 상의하세포종의 경우, 두 가지 조직학적으로 확진된 상의하세포종 증례를 소개하고 그 임상적 증상과 영상학적 소견에 대해 고찰하려고 한다.

• Radiation Oncology Journal
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• 제11권2호
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• pp.241-247
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• 1993

가톨릭 의과대학 강남성모병원 치료방사선과에서는 1988년 7월부터 1992년 12월 사이에 뇌종양 환자 45명의 뇌내 46개 병소에 대한 뇌정위다방향방사선치료를 실시하였으며, 이들에 대한 영상학적 및 임상적 추적조사 결과를 후향적으로 분석하였다. 뇌종양에 대한 뇌정위다방향방사선치료는 병소가 생명중추에 인접되어 있거나 다른 전신질환과 함께 있어 종양의 수술적 제거가 어려운 경우, 수술후 잔류 병소가 남아 있거나 재발된 경우, 또는 종래 부터 해오던 방사선치료에도 불구하고 잔류병소가 남아있거나 환자가 수술을 거부할 경우 등에서 실시하게 된다. 이는 수술이나 유사한 다른 치료와 비교하여 동일한 치료효과를 얻으면서도 간편하고 비침습적 이며 또한 상대적으로 저렴한 치료 경비가 소요됨으로, 최근 방사선치료장비 및 치료계획 프로그램의 개발과 함께 그 치료성적이 관심의 대상이 되고 있다. 환자 분포는 남녀 비가 22:33 이며, 연령 분포는 5-74세 (중앙값 : 43세)이었고, 추적조사 기간은 2-55개월 (중앙값 : 35개월)이었다. 6 MV 선형 가속기를 사용하여 조사야 용적은 $0.13-42.88\;cm^3$(중앙값 : $7.26\;cm^3)$이었으며, 최대치료선량은 5-35.5 Gy(중앙값 : 20.9 Gy)이었다. 종양 별로는 뇌하수체종양15예, 청각신경종 8예, 수막종 7예, 뇌교종 6예, 두개인두종 4예, 송과선종 3예, 혈관아세포종 2예, 및 뇌전이 암 1예 씩이었다. 총 46예 중 18예$(39.1\%)$에서 추적 영상검사상 종양의 소실 및 위축을 관찰하였으며, 10예$(34.8\%)$에서는 종양크기의 정지상태를 나타냈다. 임상적으로는 34예$(73.9\%)$에서 방사선치료 전보다 양호한 전신상태 및 수행능력을 유지하고 있었으며, 이중 4예 $(8.7\%)$에서는 추적 검사상 종양 크기가 약간 커졌음에도 불구하고 임상적으로는 안정된 상태이었다. 영상학적으로나 임상적으로 악화된 경우는 2예$(4.4\%)$에서 있었다. 치료에 따르는 부작용으로는 치료 직후, 일시적 두통을 호소하였으나 스테로이드 및 진통제 투여로 개선되었으며 경미한 일시적 탈모를 3예$(6.6\%)$에서 경험하였으며 향후 좀더 정밀 추적검사가 필요할 것으로 생각된다.

• 대한핵의학회지
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• 제8권1_2호
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• pp.39-47
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• 1974

The purpose of this study is to evalute the diagnostic value of the brain scanning and compare the diagnostic accuracy between the scan and carotid angiography. 109 cases which are proved by specific method to each disease, are analized to evalute the diagnostic value of the brain scanning. The 70 cases among the proven 109 case are performed both the scanning and the arteriography and analized to compare the accuracy between the scanning and the arteriography. The results are as follows; 1. The diagnostic accuracy of the brain scanning in the diseases of the central nervous system is 64.2%. 2. The diagnostic accuracy of the brain scanning in the brain tumor is 88%, especially brain abscess. glioma, glioblastoma multiforme, menirgioma and metastic tumor show high positive rate. 3. The diagnostic accuracy in the disease of the brain vessels is 54 %. 4. The comparison of the diagnostic value between the scanning and the arteriography is as follows; 1) The diagnostic value in all diseases of the central nervous system is nearly equal. 2) The diagnostic accuracy in the intracranial tumor is slightly higher in the brain scanning (90.9%) than in the arteriography (81.8%). 3) The diagnostic accuracy in the disease of the brain vessel is higher in the arteriography (77.3%) than in the scanning (54.5%). 5) The diagnostic value when combining the scanning and the arteriography, is 83% in the all central nervous system-lesions, 97% in the cranial tumor and 81.8% in the disease of the central nervous system-vessel. The brain scanning is simple and safe procedure, and moreover has excellent diagnostic value in the diagnosis of the central nervous system lesion.

• Journal of Korean Neurosurgical Society
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• 제30권5호
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• pp.575-580
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• 2001

Purpose : In general, pineal region tumors are managed by using microsurgical approach or stereoctactic biopsy. However, in selected cases endoscopic approach to pineal lesions might prove to be as effective as microsurgery and less invasive. We report an alternative surgical strategy for managing certain patients with pineal neoplasms that allows treatment of the symptomatic hydrocephalus as well as tumor biopsy under direct vision in the same sitting. Materials and Methods : Twenty-two patients with pineal region tumors with associated hydrocephalus were treated in one session by endoscopic third ventriculostomy and endoscopic tumor biopsy at our institution from October 1996 to January 2000. All patients were retrospectively evaluated. Results : There was no operative mortality. There was one cause of significant bleeding during biopsy, but was controlled endoscopically, and the patient recovered completely without neurologic deficit resulting from intra-operative bleeding. The symptoms related to increased intracranial pressure(ICP) have resolved in all patients, and the need for a shunt is completely eliminated. Histological diagnosis was achieved in 21 of the 22 patients by this procedure. A biopsy was not obtained in one patient. Although this pineal region tumor was seen endoscopically, this could not be biopsied because of technical difficulties in working around an enlarged massa intermedia. The lesions included fourteen germinomas, three mixed germ cell tumors, and one each of the followings: pineocytoma, pineoblastoma, pineocytoma/pineoblastoma(intermediate type), meningioma, and low grade glioma. Five of the 22 patients subsequently underwent formal microsurgical tumor removal. Additional chemotherapy or radiotherapy could then be initiated according to the histological diagnosis. Conclusion : We consider that endoscopy affords a minimally invasive way of reaching three objectives by one-step surgery in the management of pineal region tumors with associated hydrocephalus : 1) cerebrospinal fluid(CSF) sample for analysis of tumour markers and cytology, 2) treatment of hydrocephalus by third ventriculostomy, and 3) several biopsy specimens can be obtained identifying tumors which will require further open surgery or adjuvant radiation and/or chemotherapy. However, complications and morbidities should be emphasized so as to be avoided with further technical experience.

• Journal of Korean Neurosurgical Society
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• 제30권4호
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• pp.430-436
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• 2001

Objective : The proliferative potential of intracranial glioma affects the histological malignancy and prognosis of patients with these tumors. In this study, we present the relationship between MIB-1 labeling index(LI) and clinical variables which might play the major role in determining the prognosis of patient with astrocytic tumors. Patients and Methods : Excised tumor specimens from a total of 52 patients were stained to detect monoclonal MIB-1-Ki-67 antibody by avidin-biotin complex immunohistochemistry. The MIB-1 LI was evaluated with histological grades, demograpghic data, and survival time. The statistical significance of their correlation was analyzed by Pearson correlation test. Results : The 52 patients included 30 male patients and 22 female patients. The tumors according to the criteria of the World Health Organization(WHO) classification were verified as pleomorphic xanthoastrocytoma in one, pilocytic astrocytomas 4, astrocytomas 1, anaplastic astrocytomas 3, and glioblastomas 31. MIB-1 LI in astrocytic ttumors showed no correlation with age and gender. However, the patients under 10 years had the longest survival time, whereas short survival time was observed in the older patients. The mean MIB-1 LI of different tumor grades were as follows : pleomorphic xanthoastrocytoma, $4.40{\pm}0.00$ ; pilocytic astrocytoma, $4.53{\pm}3.09$ ; astrocytoma, $5.50{\pm}6.03$ ; anaplastic astrocytoma, $12.68{\pm}12.50$ ; Glioblastoma, $21.31{\pm}19.63$. Although the levels of MIB-1 LI were varied in individual tumors, the MIB-1 LI was increased in parallel with the histological grades. Glioblstomas showed significantly higher MIB-1 LI compared with that of anaplastic astrocytomas and low grade astrocytomas (p = 0.001). The mean survival time of entire group of patients was also well correlated with MIB-1 LI in astrocytic tumors(p = 0.015). Moreover, the mean survival time of the entire group of patients with Lis < 10 was $125.33{\pm}113.57weeks$, and the mean survival of those with $Lis{\geq}10$ was $60.71{\pm}62.58weeks$. This difference was also statistically significant(p = 0.004). Conclusion : The results of this study suggest that MIB-1 LI correlates with histological grades and might play a significant role in predicting the survival of patients with astrocytic tumors.