Perineural Spread of Cutaneous Squamous Cell Carcinoma Manifesting as Ophthalmoplegia.

An 89-year-old female presented with horizontal diplopia and was diagnosed with VI nerve palsy attributed to a microvascular event. She subsequently progressed to develop an orbital apex syndrome, with neuroimaging demonstrating tumour invasion. Eighteen months earlier, she had squamous cell carcinoma of the forehead excised with clear margins.

Bilateral Inflammatory Optic Neuropathy Related to Graft versus Host Disease Following Allogeneic Bone Marrow Transplantation for Hodgkin Disease.

Graft versus host disease (GvHD) is a common and often troublesome complication of allogeneic bone marrow transplantation. Neurological complications usually involve the peripheral nervous system and muscle, but the central nervous system may be affected. When an optic neuropathy develops, it is often difficult to determine the cause quickly; infective complications and drug toxicity may have arisen, but an inflammatory disorder due to GvHD should also be considered, particularly since treatment with steroids and immune suppression may improve the outcome significantly.