Crowned Dens Syndrome: A Rare Complication of Calcium Pyrophosphate Crystal Deposition Disease.

Crowned dens syndrome (CDS) is a clinical entity characterized by neck pain associated with fever, headaches, and neck stiffness, along with radiologic evidence of peri-odontoid process calcification in a characteristic "crown" or "halo" distribution. It is likely an underdiagnosed condition and patients can initially be misdiagnosed, leading to costly evaluation and unnecessary treatment interventions. We present the case of a 76-year-old man who presented to the emergency department (ED) with a 3-day history of progressively worsening neck pain that was associated with headaches, malaise, decreased oral intake, chills, and fever.

Lung Herniation Associated With Crack Cocaine Use: An Uncommon Cause of Chest Pain.

Lung herniation is an uncommon clinical entity characterized by protrusion of pulmonary tissue through an area of weakness in the chest wall. We present the case of a 56-year-old man with a history of chronic obstructive pulmonary disease (COPD) and crack-cocaine use who presented to the emergency department due to left-sided lateral chest pain, as well as a two-week history of cough, shortness of breath, and wheezing. Chest imaging revealed a contusion on the left flank and intercostal widening with a left-sided pulmonary herniation between ribs 8 and 9.