Pain and tenderness to palpation in the lower lumbar/sacral region. There is a circumscribed cystic mass measuring 3.3 x 3.7 x 2.9 cm situated approximately 3 mm below the skin surface in the lower lumbar/sacral region. This cystic mass has a thick vascular rim and internal septations demonstrating vascularity. No connection to the skin surface or deeper structures is seen. No definite solid nodule/mass is seen.
Cystic mass in the lower lumbar/sacral region. Although the appearance is slightly atypical, an abscess is most likely. Follow-up imaging is recommended after medical treatment to evaluate for improvement/resolution. If improvement is not seen, MRI should be considered.