case_images: PMC5831870_01
case_images: The opening of the fistula tract is seen on the root of the helical crus (a). A lower opening is visible in the postauricular crease (b).
case_images: CRIM2018-4215802.001.jpg
case_images: PMC5831870_01_CRIM2018-4215802.001.jpg
case_images: fig1
case_images: The lower opening in the postauricular area was surrounded by a reddish cystic lesion (Figure 1).
case_images: A CT scan with contrast shows a left rim-enhancing cyst in the postauricular crease.
case_images: CRIM2018-4215802.002.jpg
case_images: PMC5831870_01_CRIM2018-4215802.002.jpg
case_images: fig2
case_images: A preoperative computed tomography (CT) scan showed a left rim-enhancing cyst in the postauricular crease (Figure 2).
case_images: Surgical findings of the fistula tract. The tract and the opening in the postauricular crease (arrow) were excised (a). The fistula tract after total removal (b).
case_images: CRIM2018-4215802.003.jpg
case_images: PMC5831870_01_CRIM2018-4215802.003.jpg
case_images: fig3
case_images: The tract was traced anteriorly to the helical crus and a portion of helical cartilage was excised in continuity with the tract (Figure 3).
case_images: The fistula was lined with squamous epithelium, with features suggestive of a branchial cleft fistula (x100, hematoxylin and eosin stain).
case_images: CRIM2018-4215802.004.jpg
case_images: PMC5831870_01_CRIM2018-4215802.004.jpg
case_images: fig4
case_images: Histopathology revealed that the excised tissue was a fistula lined with squamous epithelium (Figure 4).