R Oteros Fernández

Publications (4)0.79 Total impact

• Article: Vertebrobasilar recanalization techniques before the placement of stent-retrievers: reopening is not synonymous with good outcome.

  F Delgado Acosta, E Jiménez Gómez, F de Asís Bravo Rodríguez, R Oteros Fernández, J J Ochoa Sepúlveda
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  ABSTRACT: OBJECTIVES: To evaluate the recanalization rate and clinical outcome three months after endovascular treatment for vertebrobasilar occlusion before the placement of stentrievers. MATERIAL AND METHODS: We reviewed all cases of basilar thrombosis treated with endovascular techniques at our center. We reviewed the clinical outcomes with the main objective of determining the recanalization rate and the secondary objective of evaluating the outcome using the modified Rankin scale (mRS) three months after treatment. We assessed clinical and angiographic variables and correlated them with outcome and complications. RESULTS: We reviewed a total of 27 consecutive patients (mean age, 58.1±15.5 y; median National Institutes of Health Stroke Scale (NIHSS), 21, interquartile range, 18-29; median Glasgow coma score (GCS) 7, interquartile range, 4-9.5). The mean time between the onset of symptoms and endovascular treatment was 26.3±41.7hours. Complete or partial recanalization was achieved in 23 (85.1%) patients. Three months after treatment, 16 (59.2%) had died and 6 (22.2%) had good outcome (mRS ≤ 2). CONCLUSION: Endovascular treatment achieved a high rate of recanalization of occlusions of the basilar artery. Nevertheless, a high percentage of the patients did not have a good outcome. New materials might improve the prognosis in these patients.
  Radiología 07/2012;
• Article: [Vertebral artery pseudoaneurysm].

  J Díaz Gómez, F de Asís Bravo-Rodríguez, R Oteros Fernández
  Neurologia (Barcelona, Spain) 11/2009; 24(9):816-7. · 0.79 Impact Factor
• Article: [Is CT-guided biopsy of aggressive sacral tumors always able to reach a diagnosis?].

  J F Molina Granados, R Oteros Fernández, D López Ruiz, F Delgado Acosta, A Cano Sánchez
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  ABSTRACT: To present a series of eight cases of rare sacral tumors that represent a wide spectrum of the aggressive disease involving the sacrum and to discuss the efficacy of CT-guided biopsy in these cases. We reviewed all cases of sacral tumors biopsied under CT guidance in the last two years. Prior CT and MR images were analyzed before biopsy, and 3 mm CT slices of the lesion were obtained to determine the location of the target area and the path of the needle. All biopsies were performed using 11 G needles and 15 G coaxial needles. Eight sacral lesions were biopsied under CT guidance, and a diagnosis was reached in four. In three of these, the diagnosis (chordoma, plasmocytoma, and metastasis from melanoma) was reached in a single session. In the fourth case, three sessions were necessary to reach the diagnosis of Ewing's sarcoma. For various reasons, the remaining four cases required surgical biopsy to reach the diagnoses of chondrosarcoma, eosinophilic granuloma, and primary bone lymphoma in two patients. The diagnostic efficacy of CT-guided biopsy was 36%. Our results suggest that CT-guided biopsy is less useful in the characterization of primary tumors than in metastases. The diagnosis of primary bone lymphomas is especially complicated. Repeating the procedure after inconclusive results probably will not provide additional information, and it is recommendable to perform surgical biopsy in these cases.
  Radiología 52(4):321-6.
• Article: [May-Thurner syndrome and surgery for scoliosis].

  R Oteros Fernández, F Bravo Rodríguez, F Delgado Acosta, I González Barrios
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  ABSTRACT: May-Thurner syndrome consists of the compression of the left iliac vein by the right iliac artery. We present the case of a 13-year-old girl with severe scoliosis and May-Thurner syndrome that became evident during surgery to correct the scoliosis. An initial attempt to treat the scoliosis employed a posterior approach using Isola instrumentation; however, the procedure was aborted due to the presence of enormous dilated perimedullary veins and hemorrhage. Angiography and venography confirmed the diagnosis of May-Thurner syndrome. Given the patient's age, the condition was not treated with an endovascular stent. She is currently awaiting definitive treatment. This is the first case in the literature in which varicose dilatation of the perimedullary veins in the spinal canal interfered with the surgical treatment of scoliosis. This case underlines the potential difficulties of surgery in the presence of myriad dilated perimedullary veins. May-Thurner syndrome should be suspected in scoliotic patients with dilated perimedullary veins.
  Radiología 50(3):245-7.