Radiation-induced leiomyosarcoma of the posterior neck region.

Leiomyosarcomas are mesenchymal malignant tumours that appear in smooth muscle cells. Their most frequent locations are the uterus and gastrointestinal tract. Their occurrence in head and neck is considered exceptional.

[Complications of endoscopic sinus surgery in a residency training program].

Introduction: Endoscopic sinus surgery presents a series of complications that can vary depending on the technique used and the surgeon's experience. This technique needs a learning curve, which must be developed during the residence training program.

Methods: Descriptive and retrospective study, reviewing the medical records of endoscopic sinus surgery for nasal polyps of 192 patients who had undergone operations performed by residents at our department between January 2002 and January 2008.