Secondary Discitis Masquerading as Treatment Failure of Primary Discitis: Case Report and Review of the Literature.

Background: Vertebral osteomyelitis often presents with localized back pain at the site of infection and elevated inflammatory markers. It can generally be treated conservatively with antibiotics targeted at the causative microorganism, but failure of medical treatment often necessitates surgical debridement. There are no reports in the literature that describe a secondary infection masquerading as treatment failure of the primary infection.

Using the Spleen as an Systemic Immune Barometer Alongside Osteosarcoma Disease Progression and Immunotherapy with -PD-L1.

Indications for immunotherapies are still unclear, and there is a great need for real-time patient immune status monitoring. In this study, we confirmed that the local and systemic immune profiles of an orthotopic osteosarcoma model with or without luciferase transfection were statistically equivalent. Next, we used flow cytometry to describe systemic immune cell populations influenced by osteosarcoma disease progression.