Primary Hodgkin lymphoma of the central nervous system is an exceedingly rare condition with very few cases reported in the literature. Isolated intradural involvement of the spine is rarer still, with only two prior cases located in the extramedullary cervical and lumbosacral spine. We present a 48-year-old female who was presented with back pain, radiculopathy and a short history of sphincter disturbance and was subsequently found to have a lobulated homogenously enhancing exophytic lesion involving the conus medullaris and cauda equina on magnetic resonance imaging. Histopathological examination demonstrated the features of classic Hodgkin lymphoma. In this report, we present a case of primary intramedullary Hodgkin lymphoma involving the conus medullaris and cauda equina.

Introduction:The number and characteristics of patients with previous spine surgery receiving chiropractic spinal manipulation (CSM) are largely unknown. This study aimed to explore the proportion of patients receiving CSM with a history of spine surgery, the characteristics of these patients, and the treatments received compared to a broader population of patients receiving CSM.Methods: We queried a 110-million-patient United States (US) network of aggregated records and claims data from patients attending integrated academic health centers (TriNetX, Inc.) on March 6, 2023, yielding data spanning 2013-2023. We identified two patient groups: (1) those receiving CSM and (2) a subset receiving CSM with prior spine surgery. We compared baseline characteristics and treatments received over a one-year follow-up after CSM.Results: Of the 81,291 patients receiving CSM, 8,808 (10.8%) had at least one prior spine surgery. Patients with prior spine surgery receiving CSM were older, more often female, more often non-Hispanic/Latino and White, less often Black, had a greater body mass index, and had a higher prevalence of low back and neck pain compared to the broader CSM cohort (p<0.0001 for each). Those with prior spine surgery were also more likely to receive multiple medications, physiotherapy procedures, and spinal injections (p<0.0001 for each).Conclusion: Patients receiving CSM with a history of spine surgery comprise a substantial proportion of CSM patients in large US academic health centers. This subset of patients differs characteristically from the broader CSM population and more often receives medications, physiotherapy, and spinal injections. Further research is needed to examine the safety and efficacy of CSM in this population, given the high proportion of patients and limited research on this topic.

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