Exceptional Extension of Benign Angiomyolipoma in the Renal Vein.

Teaching Point: When a renal angiomyolipoma (AML) is incidentally detected on imaging, the venous system should be assessed for intravascular fat component.

The Typical "Cracked Dry Mud" Ultrasound Pattern of Proliferative Myositis.

Teaching point: The typical "cracked dry mud" pattern on ultrasound may help avoiding biopsy for proliferative myositis which is a self-resolving benign process.

Unusual vanishing interstitial lymphatic "pearls" in a patient presenting with extensive interstitial and mediastinal MDCT features of acute cardiogenic failure related to bradycardia and mitral regurgitation.

Thoracic multidetector computed tomography-MDCT-was simultaneously performed during emergency abdominal CT in a patient presenting with abdominal pain and acute cardiogenic edema related to sick sinus syndrome and mitral prolapse with regurgitation. A constellation of severe but completely reversible interstitial and mediastinal features was found comprising pleural effusions, diffuse alveolar ground glass, thickening of the bronchial walls and septal lines, hazy infiltration of the mediastinal fat, and enlarged lymphatic nodes. Multiple atypical hypodense nodular "pearls" were also found. These oval shape or fusiform pearls were distributed along the thickened septal lines and disappeared completely after treatment. The hypothesis of transient lymphatic ectasia or lakes is proposed for these never previously described abnormalities.

Perforation of the gastrointestinal tract caused by inadvertent ingestion of blister pill packs: report of two cases diagnosed by MDCT with emphasis on maximal intensity and volume rendering reformations.

We report two cases of elderly patients presenting with life-threatening complications due to inadvertent accidental ingestion of blister pill packs (BPPs). The first patient presented with obstruction followed by anemia and finally perforation of the small bowel. The second presented with rapidly lethal mediastinitis due to a large perforation of the lower esophagus. The responsible BPPs were identified by multidetector computed tomography and the best result in their characterization was obtained through maximal intensity projections and volume rendering reformations.