Introduction
Tumors are known to occur under the nails, albeit rarely. Several
studies on subungual tumors used ultrasound (US) and magnetic resonance
image (MRI).1–4 However, these studies seldom mention
subungual abscesses. Typically, reports of subungual abscesses are only
available at the case report level,5–7 and US and MRI
images of subungual abscesses are not available to the best of our
knowledge; thus, imaging findings of such abscesses do not exist.
Subungual abscess treatment has been effective with carbon dioxide
(CO2) laser drainage and antibiotic administration. We
have experienced a case of a subungual abscess that improved after
manual drainage without antibiotics. Here we report US and MRI images of
the subungual abscess before and after treatment.