Pyogenic Spondylodiscitis
Chapter 85 reviews the radiologic features of pyogenic spondylodiscitis and the diagnostic value of different imaging modalities such as conventional radiography, CT, MRI, and bone scintigraphy. Pyogenic spondylodiscitis is an infection of the intervertebral disc and adjacent vertebrae and may involve the paravertebral soft tissue and epidural space. The indolent clinical presentation poses a challenge in early diagnosis and management. Pyogenic spondylodiscitis can be diagnosed based on clinical findings and blood and tissue cultures and is supported by radiological and histopathologic findings. This chapter also reviews the imaging differential diagnoses, including tuberculous spondylodiscitis and malignancies. Imaging plays a crucial role in early diagnosis of disease and in demonstrating the extent of the disease process, as treatment delay significantly reduces the cure rate and increases the complication and morbidity rates.