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Neurolymphomatosis is a rare neurological syndrome in lymphomas. It is reported as infiltration of peripheral nerves by lymphoma. It is important to distinguish neurolymphomatosis from other types of neuropathies, particularly infectious and inflammatory conditions. However, it is difficult to isolate a cancer-related inflammatory vasculitis and mononeuritis multiplex without definitive histopathologic examination. In this report, we describe a case of non-Hodgkin's lymphoma involving the peroneal nerve and presenting as neurolymphomatosis., (Copyright © 2016 Elsevier Inc. All rights reserved.)

Kikuchi-Fujimoto disease (KFD) is an uncommon disorder that usually presents in young adults of Asian descent with fever and cervical lymphadenopathy. Clinically, this disease is often misdiagnosed as lymphoma or tuberculosis, and biopsy is needed for confirmation. The authors report an unusual case of KFD in a Hispanic male presenting with a subacute subdural hematoma, whose care was complicated by extranodal features not typically associated with KFD. The clinical, histopathologic, and radiographic manifestations of KFD are discussed.

Malignant neoplasia involving contiguous vertebrae and the corresponding intervertebral discs is a rare occurrence that has similar imaging manifestations as pyogenic osteodiscitis. The authors describe the imaging manifestations of two cases of malignant neoplasia mimicking pyogenic osteodiscitis. We present a case of an 83-year-old male with metastatic non-small cell lung carcinoma and an 82-year-old female with a plasmacytoma, both within the thoracic spine. These cases illustrate how the imaging features of pyogenic osteodiscitis may parallel those of malignant neoplasia., (Copyright 2010 Elsevier Inc. All rights reserved.)

Susac syndrome is a rare neurologic disorder first described by Susac et al. in 1979. Clinically, Susac syndrome consists of a triad including encephalopathy, branch retinal artery occlusion, and sensorineural hearing loss. Microinfarction is believed to be the basic histologic feature and MR is considered the best imaging modality. This case documents the typical imaging findings of Susac syndrome, as well as the unique MR imaging finding of cranial nerve enhancement., (Copyright 2010 Elsevier Inc. All rights reserved.)