preferred_name: Single, bilateral, symmetric papular/nodular lesion in the midline plantar region of the heel (0.5 - 1 cm diameter)
preferred_name_lc: single, bilateral, symmetric papular/nodular lesion in the midline plantar region of the heel (0.5 - 1 cm diameter)
label: Single, bilateral, symmetric papular/nodular lesion in the midline plantar region of the heel (0.5 - 1 cm diameter)
label_lc: single, bilateral, symmetric papular/nodular lesion in the midline plantar region of the heel (0.5 - 1 cm diameter)