PMC4717609_01
(A, B) Gross appearance revealed 5 x 1-cm-sized tail-like mass at the anal margin.
astr-90-53-g001.jpg
PMC4717609_01_astr-90-53-g001.jpg
F1
A 5-day-old male neonate was referred to our outpatient clinic, presenting a 5 x 1-cm-sized tail-like perianal mass found at birth (Fig. 1).
Microscopic findings. (A) Mature adipose cells with varying sizes and shapes (H&E, x40); (B) The adipose cells showed no cellular atypism consistent with lipoma (H&E, x200).
astr-90-53-g002.jpg
PMC4717609_01_astr-90-53-g002.jpg
F2
The mass was confirmed as a benign mature lipoma (Fig. 2).