Acute perilunate dislocation in a pediatric patient.

Lunate and perilunate dislocations are rare in children, but should be suspected in patients with significant wrist swelling and decreased range of motion after trauma or falls on an outstretched hand.

Megaloblastic hematopoiesis in a 20 year old pregnant female.

Background: Nitrous oxide can cause disordered blood cell proliferation and lead to pancytopenia and altered immune function.

Case Report: A young pregnant female patient presented after binge nitrous oxide abuse with altered mental status and abnormal vital signs. From her initial assessment she was noted to have pancytopenia and was found to have megaloblastic, hyper-cellular changes in a subsequent bone marrow biopsy.