Improving the ability to discriminate medical multiple-choice questions through the analysis of the competitive examination to assign residency positions in Spain.

Introduction: Psychometrics plays a vital role in evaluating educational research, including the analysis of multiple-choice exams. This study aims to improve the discriminatory ability of the "Médico Interno Residente" (MIR) medical exam in Spain, used to rank candidates for specialized healthcare training, through psychometric analysis.

Methods: We analyzed 2,890 MIR exam questions from 2009 to 2021 (totaling 147,214 exams), categorizing them based on methodology and response type.

Embolization for Carotid Blowout in Head and Neck Cancer: Case Report of Five Patients.

Carotid blowout syndrome (CBS) is defined as a rupture of common carotid artery or its branches. Endovascular intervention has been advocated as first line of treatment for CBS. This Case Report describes 5 patients with prior history of head and neck cancer who presented with CBS.

Efficacy and Safety of Endovascular Treatment in Acute Tandem Carotid Occlusions: Analysis of a Single-Center Cohort.

Introduction: Acute ischemic strokes with tandem occlusions, which represent 10-20% of all ischemic strokes, have a particularly poor prognosis. Since emergent treatment of tandem lesions has not been specifically addressed in randomized trials, there is an absence of standardized management.

Objective: We sought to assess the efficacy and safety of acute endovascular treatment in stroke due to tandem occlusions in our center and compare the results with previous reports.

Giant cranionasal epithelioid haemangioendothelioma with invasive growth pattern mimicking a skull base chondrosarcoma.

Epithelioid haemangioendothelioma (EHE) is a rare low-grade vascular neoplasm that is composed of mostly epithelioid cells. EHE may arise as a solitary tumour or in the form of multiple body lesions, and commonly occurs in soft tissues, liver, pleura, lung, peritoneum, lymph nodes, breast, and many other sites. EHE in the cranionasal region is extremely rare.

Endovascular reconstruction of internal carotid artery dissection in patients with acute ischemic stroke using the Wingspan stent.

Objective: The purpose of this study is to demonstrate our experience in endovascular reconstruction of carotid dissections using the Wingspan Stent System™ (Boston Scientific, Natick, MA, USA), a device we use because of its high radial force and its navigation in extreme curves.

Methods: We treated 11 consecutive patients with acute ischemic stroke due to carotid dissection with the Wingspan stent, in the cervical carotid artery.

Results: Functional evaluation revealed that 10 of the 11 patients were independent at 3 months post surgery and that the 11 stents used were found to be patent at the 6-month follow-up digital subtraction angiography (DSA).

Analysis of endovascular treatment of ruptured aneurysms of the middle cerebral artery compared to other anatomical locations.

Objective: The objective of this article is to compare the results of endovascular treatment of ruptured middle cerebral artery (MCA) aneurysms with ruptured aneurysms of other anatomic locations.

Methods: Fifty consecutive ruptured aneurysms of the MCA and 209 aneurysms at other anatomical locations were selected retrospectively. We compared epidemiological, clinical and radiological variables, prognosis and complications.

Analysis of endovascular treatment of ruptured microaneurysms compared with ruptured larger aneurysms.

Objective: To retrospectively analyze the complications and outcome of the endovascular treatment of ruptured microaneurysms compared with the treatment of ruptured larger aneurysms.

Methods: 40 ruptured cerebral microaneurysms treated by endovascular techniques were selected retrospectively and compared with 207 larger ruptured cerebral aneurysms treated by endovascular techniques during the same time period. Medical charts and imaging studies were reviewed to analyze baseline clinical and epidemiologic characteristics, procedural complications, and clinical outcomes RESULTS: Cerebral microaneurysms had a higher incidence of intraoperative technical ruptures (13.

[Elusive thoracic spine tumour. Report of an exceptional case and literature review].

Elusive tumours in the spine, most of them schwannomas of the cauda equina, have been reported very rarely. We present the case of a woman with a preoperative radiological diagnosis of schwannoma at D10 level in whom a laminectomy was performed to remove the tumour. Although the laminectomy was correctly positioned, there was no tumour upon opening the dura and the laminectomy had to be extended cephalad to find and remove the tumour.

Anatomical results, rebleeding and factors that affect the degree of occlusion in ruptured cerebral aneurysms after endovascular therapy.

Object: To present a series of ruptured cerebral aneurysms in consecutive non-selected patients treated with endovascular therapy, analyzing the initial degree of occlusion, its anatomical evolution mid-term and the variables that could statistically affect them.

Methods: 251 aneurysms were first treated with coiling (embolization). 203 patients were followed up with conventional angiography for 6-8 months after the initial treatment and 182 were followed up with three-dimensional time of flight MR angiography at 18-24 months.

[Ruptured cerebral artery blister aneurysm].

We report the case of a young patient with subarachnoid haemorrhage secondary to a ruptured blister-like aneurysm. Since this kind of aneurysms have fragile walls without a well-defined neck, their treatment is difficult. We initially planned the deployment of a flow-diverter stent, but an angiogram obtained after 10 days revealed a morphological change of the aneurysm.

[Endovascular treatment of carotid stenosis: an experience in the Hospital Universitario Central de Asturias].

Introduction: Carotid stenosis accounts for about 25% of all ischaemic cerebrovascular events. Carotid angioplasty and stenting (CAS) is a minimally invasive procedure used as an alternative to carotid endarterectomy, especially in high surgical risk patients.

Aim: To analyse the effectiveness and safety of the endovascular treatment of carotid stenosis in the Hospital Universitario Central de Asturias.