A Rare Case of Pediatric Nasopharyngeal Rhabdomyosarcoma With Parameningeal Extension Presenting as a Thornwaldt Cyst.

Rhabdomyosarcoma (RMS) is a common soft tissue malignancy of the pediatric age group, frequently involving the head and neck region; however, nasopharyngeal RMS is a rare entity. By virtue of its parameningeal involvement and nonspecific presentations, nasopharyngeal RMS has become a clinical challenge to diagnose. We present a case of an eight-year-old boy presenting with signs and symptoms of nasal obstruction who was initially being treated for tonsillitis.

A Feasibility Study on Proton Range Monitoring Using N Peak in Inhomogeneous Targets.

Proton irradiations are highly sensitive to spatial variations, mainly due to their high linear energy transfer (LET) and densely ionizing nature. In realistic clinical applications, the targets of ionizing radiation are inhomogeneous in terms of geometry and chemical composition (i.e.