[Persistent primitive trigeminal artery associated to aneurysm of the posterior communicating artery: a case report].

We report the case of a patient that presented with an intense headache caused by a subarachnoid hemorrhage. Magnetic resonance angiography demonstrated the existence of an aneurysm of the left posterior communicating artery, as well as of a persistent primitive trigeminal artery.

[Heterotopia as the cause of seizures. A case report of familial periependymal heterotopia].

Introduction: Cortical development disorders constitute a group of entities resulting from an interruption in the development of the central nervous system. Most of them derive from the stoppage of migration, but proliferation and organisation can also be affected. Heterotopia is the most frequent of all migration disorders.

Transthoracic aspiration biopsy of pulmonary and mediastinal lesions.

Thoracic aspiration biopsy (TAB) constitutes a useful technique in establishing a diagnosis in diseases of the lungs and mediastinum. Results obtained from 1046 fluoroscopically-guided TABs are presented with review of the most important aspects of the technique. Diagnostic accuracy in malignancy detection was 93.

[Radiologic aspects of granulomatous colitis].

The granulomatous colitis represents the peculiar clinical and radiological manifestations of the Crohn disease, localized in the colon. Although it can be localized in any organ of the digestive apparatus, the affection of the colon follows in importance to the ileocecal, with identical pathologic characteristics. The radiology is a fundamental pillar of the diagnostic when there are established direct and indirect signs of the macroscopic alterations, of its development and complications.