Metatarsal stress fracture on radiography and MRI

A magnified A-P view of the right foot obtained at presentation is normal. An MRI performed one week later (B) using a PD FS FSE sequence shows significant soft tissue edema (arrow) bone marrow edema (arrowhead). An A-P view of the foot (C) three weeks later shows periosteal reaction (arrowhead) and a vague lucency (arrow).