Evaluation of foreign body aspiration of the airway in children can be accomplished by using a low-tube-current MDCT protocol. It may be useful both in showing the exact location of a foreign body before bronchoscopy and in ruling out a foreign body in patients with a low level of suspicion and normal or nonspecific findings on chest radiography.

Purpose: To prospectively determine whether the diffusion-weighted magnetic resonance imaging is useful to distinguish between malignant and benign mediastinal lymph nodes. Materials and Methods:Thirty-five patients (14 women, 21 men; mean age 52 years) with 91 lymph nodes in the mediastinum detected by computed tomography underwent 1.5 Tesla (T) diffusion-weighted MR imaging before mediastinoscopy (n ϭ 29) and mediastinotomy (n ϭ 6). Diffusion-weighted MR images were acquired with a b factor of 50, and 400 s/mm 2 using single-shot echo-planar sequence.

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Esophageal impacting of button batteries must be distinguished from impacting of other foreign bodies because of their severe complications. We present a 2.5-year-old girl who had an acquired tracheo-esophageal fistula (TEF) caused by a calculator battery lodged in her esophagus. We also review the literature and assess the applicability of multislice CT and its possible advantages in children with acquired TEF.