Radiologic Mimics of Osteomyelitis and Septic Arthritis: A Pictorial Essay

Figure 17

Osteoradionecrosis. Orthopantomogram (OPG, (a)) of a 74-year-old male with a history of T3 oropharyngeal tumour having undergone prior resection and chemoradiotherapy, complicated by osteoradionecrosis. There is ill-defined lytic lucency eroding the right mandibular body with background coarsened trabeculation and patchy sclerosis. Axial T1 (b) and T2FS (c) of a different patient with a previous history of radiotherapy for skin SCC, presenting with a nonhealing ulcer due to osteoradionecrosis. There are T1 hypointensity and fluid-hyperintensity in the body of the right mandible ((a) arrow). Mild surrounding soft tissue oedema ((b) arrow).

(a)

(b)

(c)