 [ Symptoms ] painful nodule on bottom of foot two more now any type of stretching causes excruciating pain [ Disease ] magnetic resonance image mri or musculoskeletal ultrasound can confirm the soft tissue character of the nodular mass as homogenous and collagenous in nature only atypical masses or those that remain suspicious after diagnostic imaging studies necessitate biopsy treatment beyond biopsy is only indicated if the plantar fibromatosis is symptomatic locally invasive or prominent in shoes or with weightbearing removable donut pad for an isolated or smaller plantar fibroma may help