[RECIST classifications : our experience at a university hospital]

Since the WHO [World Health Organization]'s criteria published in 1981, many organizations and research teams worked on revising and defining criteria for response monitoring of solid tumors. The RECIST criteria in 2000 and its revised version in 2009 introduced major changes in selecting lesions to be assessed and measuring them, and determining treatment response. While treatments are becoming more specific with the emergence of targeted therapies, response criteria are becoming more diversified and specialized with a type of tumor or/and treatment. This review describes the evolution of response criteria methods and sketches our experience in this field in Lebanon

Focus on the immediate hypersensitivity reactions products contrast iodinated [PCI]

The use of iodinated contrast agents [IC] has become common practice nowadays in the daily diagnostic and therapeutic procedures in radiology. Immediate hypersensitivity reactions occurring up to the first hour after injection of IC, can be of serious consequences, occasionally leading to death. This justifies the establishment of a prevention algorithm, including a sharp identification of those at risk and the implementation of premedication with corticosteroids. A history of previous reaction to IC is the major risk factor of a new reaction. Other risk factors include asthma, atopy and cardiomyopathy. The factors that influence the severity of the hypersensitivity allergic reactions are female gender, age, and taking beta blockers or ACE inhibitor drugs

[Anatomy of the larynx with 64-CT scan]

Knowledge of axial anatomy of the different laryngeal structures, identification of the plan of the cords, and relations between the true and false vocal cords is essential for laryngeal surgery where anatomical and radiological correlation is necessary for optimal orientation and guidance. This review constitutes an atlas of axial anatomy of the larynx obtained from a multidetector CT scan, describing the skeletal cartilage, the different folds constituted by iaryngeal ligaments covered by mucosa, and the fatty laryngeal spaces. It shows that CT scan and the different reconstructions specifically virtual endoscopy are a valuable adjunct in laryngeal exploration

[Application of ultrasound in musculo skeletal pathologies in pediatrics]

Osteoarticular ultrasound, a well established technique in adults, appears to be very useful also in children because of the non ossification of cartilaginous structures, the possibility to avoid sedation and irradiation, and hence the use of scanner and MRI will be reduced. This is a review of the clinical applications of musculoskeletal ultrasound in the pediatric population. Pictorial examples of cases collected between January 2003 and December 2006 of different pathologies encountered in Lebanon are displayed with a discussion of congenital malformations, traumatic lesions, inflammatory and infectious lesions, bone dystrophy and dysplasia, metabolic and tumoral lesions