PMC5118519_01
(a) Intraoral view of the right buccal mucosa shows the papilla of Stensen's duct. (b) Intraoral view of the left buccal mucosa. The papilla of Stensen's duct is absent.
CRID2016-2672496.001.jpg
PMC5118519_01_CRID2016-2672496.001.jpg
fig1
Physical examination of the head and neck was without pathological findings, except for the absence of the left parotid gland papilla (Figure 1).
MRI scan of the parotid gland shows the unilateral agenesis of the parotid gland. (a) Coronary scan and (b) axial scan. The arrow points to the lipoma of the cheek and the triangle points to the right parotid gland.
CRID2016-2672496.002.jpg
PMC5118519_01_CRID2016-2672496.002.jpg
fig2
MRI confirmed a lipoma of the cheek on the right side and a unilateral absence of the left parotid gland (Figure 2).
Technetium-99m pertechnetate scintiscan showing no activity in the left parotid gland and a normal activity in the other major salivary glands.
CRID2016-2672496.003.jpg
PMC5118519_01_CRID2016-2672496.003.jpg
fig3
Salivary gland scintigraphy showed no activity in the area of the left parotid gland with normal function of the other major salivary glands (Figure 3).
Histological examination of the buccal lipoma on the right side by Goldner's Trichrome staining.
CRID2016-2672496.004.jpg
PMC5118519_01_CRID2016-2672496.004.jpg
fig4
Histological examination of the specimen confirmed the clinical suspicion of lipoma (Figure 4).