"T1: hypointense"
"T2: variable, depending on the phase of healing 3"
"The fibrous cortical defect was first described by Dallas Burton Phemister (1882-1951) 5, an American orthopaedic surgeon in 1929 6."
"In the popular mnemonic for lucent bone lesions FEGNOMASHIC, non-ossifying fibroma accounts for the "N" and FCD can be considered to account for the "F"."
"Fibrous cortical defects are benign lytic bone lesions, and, along with fibrous dysplasia share the F in the popular mnemonic FEGNOMASHIC."
"The term fibrous cortical defect has been used for bone lesions representing non-ossifying fibromas smaller than 2-3 cm. According to the WHO classification of soft tissue and bone tumours (5th edition), the term is no longer recommended and instead, non-ossifying fibroma (NOF) is preferred 6."
"Fibrous cortical defects are benign lytic bone lesions, and, along with fibrous dysplasia share the F in the popular mnemonic FEGNOMASHIC."
"Fibrous cortical defects are benign lytic bone lesions, and, along with fibrous dysplasia share the F in the popular mnemonic FEGNOMASHIC."
Expected headings
"Plain radiograph and CT"
"Nuclear medicine (bone scan)"
"Fibrous cortical defects typically occur in children (usually 2-15 years) and are one of the most common benign bone lesions, which combined with non-ossifying fibromas are seen in up to 40% of skeletally immature children/adolescents 3. There is a male predilection by a ratio of 2:1 3."
"Fibrous cortical defects macroscopically appear as fleshy, fibrous, yellow or tan-brown lesions with variable areas of haemorrhage 3."
"As these lesions are benign, characteristic in appearance and self-limiting, no treatment, biopsy or follow-up is required in typical cases. If associated with pathological fracture (more common in non-ossifying fibromas) then cast immobilisation until the fracture has healed, followed by biopsy with or without curettage, and bone grafting may be necessary 3."
"The appearance depends on the phase of the lesion. In general, they are negative; however, mild hyperaemia and moderate bone uptake are present during healing. If extensive uptake or hyperaemia is present, then an alternative diagnosis or superimposed fracture should be considered 3."