In electron scattering from crystals, diffraction spots are replaced by Kikuchi patterns at high momentum transfer. Kikuchi pattern formation is based on the concept of effective incoherent electron sources (or detectors) inside a crystal. The resulting incoherence is a consequence of energy transfer connected with the momentum transfer in large-angle scattering events. We identify atomic recoi...

Kikuchi–Fujimoto disease (KFD), also known as histiocytic necrotizing lymphadenitis, is a rare and generally self-limiting of uncertain etiology that presents with fever cervical lymphadenopathy in both the pediatric adult populations. Here, we present case 5-year-old male who presented acute onset which was initially diagnosed managed staphylococcal lymphadenitis. He underwent an excisional bi...