ALK-positive anaplastic large cell lymphoma initially diagnosed as neurosarcoidosis in a 12-year-old girl.

We present a rare case of optic neuropathy due to anaplastic lymphoma kinase-positive (ALK+) anaplastic large cell lymphoma (ALCL) with optic nerve infiltration in a 12-year-old girl who presented with acute unilateral vision loss, diplopia, and headache after two prior hospitalizations at an outside facility for disk edema. She had a presumptive diagnosis of neurosarcoidosis and empiric treatment had been initiated with high-dose corticosteroids. Ongoing worsening of vision prompted presentation at our facility.

Influenza vaccines effectiveness 2013-14 through 2015-16, a test-negative study in children.

Background: Trivalent inactivated and live attenuated influenza vaccines (IIV3 and LAIV3) have been reformulated with an extra B strain (IIV4 and LAIV4). They were licensed based on immunogenicity and their effectiveness (VE) still must be empirically tested.

Methods: Children 1-17years tested for influenza during 2013-16 were included and their immunization status verified.