MRI for the diagnosis of recurrent middle ear cholesteatoma in children--can we optimize the technique? Preliminary study.

Background: Recurrent cholesteatoma after surgical excision occurs frequently in children. Until recently, a surgical second look was mandatory and considered as standard reference. MRI including a delayed T1 sequence after gadolinium injection and diffusion-weighted imaging (DWI) has proved its efficiency but has been evaluated mainly in adults.

Drug-induced hypersensitivity syndrome: clinical and biologic disease patterns in 24 patients.

Drug-induced hypersensitivity syndrome (DIHS), also called drug rash with eosinophilia and systemic symptoms (DRESS), is a severe reaction usually characterized by fever, rash, and multiorgan failure, occurring 1-8 weeks after drug introduction. It is an immune-mediated reaction involving macrophage and T-lymphocyte activation and cytokine release, although no consensus has been reached as to its etiology. The skin, hematopoietic system, and liver are frequently involved.

Relevance of CT and MRI in retinoblastoma for the diagnosis of postlaminar invasion with normal-size optic nerve: a retrospective study of 150 patients with histological comparison.

Background: Detection of optic nerve invasion is mandatory in children primarily enucleated for retinoblastoma to ensure a free resection margin.

Objective: To assess the accuracy of CT and MRI for the detection of postlaminar invasion in normal-size nerves.

Materials And Methods: A total of 150 patients enucleated for retinoblastoma were included.