Pilonidal sinus (intergluteal)
Discharing sinus at upper end of natal cleft for one month.
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A non-branching single tract is noted from skin opening. It extends in mid line in caudal direction for about 5 cm length. Linear echogenic foci are noted in tract - Hair follicles.
No abscess surrounding tract is noted.
A non-thrombosed subcutaneous vein is seen abutting deeper surface of tract.
Findings favour pilonidal sinus.
- Common Applications of Dermatologic Sonography Ximena Wortsman, MD J Ultrasound Med 2012; 31:97–111 | 0278-4297