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Permanent URI for this collectionhttps://hdl.handle.net/11443/932

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Author: search.filters.author.Aydin, YunusHas files: Yes

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    Computerized Tomography-Guided Stereotactic Biopsy of Intracranial Lesions: Report of 500 Consecutive Cases
    (TURKISH NEUROSURGICAL SOC, 2017-01-01) Can, Songul Meltem; Turkmenoglu, Osman Nuri; Tanik, Canan; Uysal, Ender; Ozoner, Baris; Kaldirimoglu, Saime Ayca; Musluman, Ahmet Murat; Yilmaz, Adem; Cavusoglu, Halit; Bayindir, Cicek; Aydin, Yunus
    AIM: Computed tomography (CT)-guided stereotactic brain biopsy has been performed in our clinic since March 1998. In this prospective study, we examined the patient data undergoing stereotactic biopsy and the results of biopsies in 500 consecutive patients. MATERIAL and METHODS: Between the dates of March 1998 and January 2015, CT-guided stereotactic biopsies were performed by using the Leksell stereotactic frame system (Elekta Instruments EU, Sweden) in 500 patients. A total of 512 procedures were performed in patients consisting of 184 females (36.8\%) and 316 males (63.2\%), ages ranging from 3 to 81 years (mean 50.40 +/- 16.67). RESULTS: Conclusive histopathological diagnosis was not achieved in 17(3.3\%) of 512 procedures. Of the others, 173 (33.8\%) were high-grade gliomas, 103 (20.1\%) were low-grade gliomas, 36 (7\%) were malignant lymphomas, 34 (6.6\%) were other types of brain tumors, 82 (16\%) were metastasis and 67 (13.1\%) were non-tumoral lesions. Complications were occurred in ten cases: 3 tumoral bleedings, 2 hypertensive cerebral hematomas, 2 peroperative convulsions, 1 epidural hematoma, 1 myocardial infarction and 1 brain edema. The patients who developed myocardial infarction and hypertensive thalamic hematoma died. The mortality was 0.4\% and morbidity was 1.6\% in 512 procedures. CONCLUSION: CT-guided stereotactic biopsy is a reliable and a safe procedure in cases with intracranial lesions when histopathological diagnosis is required for the appropriate treatment.
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    Ultrasound-Guided Microsurgical Excision for Brachial Plexus Schwannomas: Short-Term Clinical Study
    (TURKISH NEUROSURGICAL SOC, 2019-01-01) Yuce, Ismail; Kahyaoglu, Okan; Mertan, Pelin; Cavusoglu, Halit; Aydin, Yunus
    AIM: To describe the ultrasound-guided microsurgical excision technique and to evaluate the surgical outcomes of brachial plexus schwannomas. MATERIAL and METHODS: Eleven patients who underwent ultrasound-guided microsurgery for small (<3 cm) brachial plexus schwannomas between 2013 and 2017 were included in our study. RESULTS: The mean age of the patients was 45 years (range: 30-68 years), with six tumors localized on the right and five on the left side. There were no perioperative or postoperative complications. No postoperative deficits were observed in the patients. CONCLUSION: Surgeons can safely and completely excise most of the benign (<3 cm and non-palpable) brachial plexus tumors by the ultrasound-guided microsurgical excision technique.