[Combined supra and infratentorial presigmoideo approach for lesions of the petrous and clival regions].

Introduction: Petrous and petroclival lesions may be surgically treated with combinations of suprainfratentorial presigmoideo approach and microsurgical techniques.

Objective: To demonstrate the utility and to present our surgical experiences with this approach.

Patients And Methods: Thirteen patients with lesions of the clival, petrous region and of the cerebellopontine angle with extension toward the anterior portion of brainstem were taken to the operative room.

[Familial intracranial aneurysms in Camagüey].

Introduction: Genetic etiology in suggested in intracranial aneurysms. Such hypothesis is supported on familial aggregation, ocurrence in identical twins or associated to genetic diseases like adult polycystic renal disease.

Objective: To identify biological features in familial aneurysms different to sporadic ones.

[Intracranial carotid artery bifurcation aneurysms].

Introduction: Intracranial carotid artery bifurcation aneurysms are infrequent but its clinical behavior, high risk of bleeding and complex anatomic relationships of the sac permit to consider these lesions as a challenge cases.

Patients And Methods: 497 patients harboring intracranial aneurysms were operated on at Manuel Ascunce Domenech Hospital, Camagüey, Cuba between January 1982 to august 2001. We utilized microsurgical procedures, optical magnification, specialized neuroanesthesia and Intensive Care Unit postoperatory following.

[Simultaneous cephalic migration of a ventriculoperitoneal shunt into the intraventricular and subdural spaces. A case report].

Introduction: Hydrocephaly is defined as a hemodynamic disorder in which the production, circulation or reabsorption of cerebrospinal fluid is involved. Migration, in a cephalic direction, into the subdural and intraventricular spaces of the proximal ends (shunt malfunction), is very unusual and perhaps not yet reported. It probably involves movement of the craniospinal region of the patient which leads to a follow on effect due to an underlying disorder.