PMC8174461_01
Parallel rows of epithelial cells with basophilic nuclei appeared to form ductal structures (H and E, x40).
DRJ-18-15-g001.jpg
PMC8174461_01_DRJ-18-15-g001.jpg
F1
Stroma was hypocellular and vascular and neither cytological pleomorphism nor mitotic figures were observed [Figures 1 and 2].
Single or bilayered cords of uniform cuboidal epithelial cells which enclose ductal structures in the form of long canals (H and E, x100).
DRJ-18-15-g002.jpg
PMC8174461_01_DRJ-18-15-g002.jpg
F2
Stroma was hypocellular and vascular and neither cytological pleomorphism nor mitotic figures were observed [Figures 1 and 2].
(a and b) Intense expression of pan-cytokeratin by tumor cells. The staining was cytoplasmic (x40 and x 100). (c and d) Canalicular adenoma stained with S-100 protein. Staining was localized to outer portions of canals (x40 and x 100).
DRJ-18-15-g003.jpg
PMC8174461_01_DRJ-18-15-g003.jpg
F3
The S-100 protein staining was localized to outer portions of the canals [Figure 3].
Clinical view about 6 months later with no report of recurrence or any evidence of new lesion.
DRJ-18-15-g004.jpg
PMC8174461_01_DRJ-18-15-g004.jpg
F4
In our case, the lesion was surgically excised, and there have been no recurrences even after 6-month follow-up [Figure 4].