[Pancreatic cystic neoplasms: work-up and surveillance].

Whereas pancreatic masses are often difficult to detect with transabdominal ultrasound, cross-sectional imaging features high sensitivity for the pancreatic tumors. However, increasing availability of magnetic resonance imaging (MRI) has led to a surge in the detection of benign or precancerous pancreatic lesions. The medical history is characteristic only for two entities.

Delaying surgery to perform CT scans for suspected appendicitis decreases the rate of negative appendectomies without increasing the rate of perforation nor postoperative complications.

Purpose: Negative appendectomies are costly and are embedded with unnecessary risks for the patients. A careful indication for surgery seems mandatory even more so, since conservative therapy emerges as a potential alternative to surgery. The aims of this population-based study were to analyze whether radiological examinations for suspected appendicitis decreased the rate of negative appendectomies without increasing the rate of perforation or worsening postoperative outcomes.

[Thoracopagus symmetricus. On the separation of Siamese twins in the 10th century A. D. by Byzantine physicians].

The byzantine author, Leon Diakonos, mentions in 974/975 A.D. a pair of "siamese twins", e.