This document describes canalicular adenoma, a benign salivary gland tumor that most often occurs in minor salivary glands. It is composed of columnar epithelial cells arranged in branching chords. Canalicular adenomas typically present as slow-growing, asymptomatic, rounded masses in older adults, especially women over 50 years old. Histopathological examination shows bilayered strands of columnar cells within a delicate stroma. Surgical excision is the treatment, and the prognosis is generally good though there is a 20% chance of multifocality or recurrence.

1. Canalicular
Adenoma
Panopio, Kathleen
Cay M.
DMD-3BB

2. Canalicular Adenoma
Type
of benign salivary gland
tumor occurs most often in
minor salivary glands.
Grouped
in the category of
monomorphic adenoma.

3. Canalicular Adenoma
Composed
of columnar
epithelial cells arranged in
single or double layer forming
branching chords.

5. Location
Minor
salivary glands
Buccal
mucosa
Soft Palate
Labial
mucosa
Lateral portion
of Hard Palate
Floor of the
Mouth
Lingual
mucosa

6. Location
Minor
salivary glands
Paranasal
Sinonasal
Oropharynx

7. Location
MAJOR salivary glands
Minor
Upper
Lip (81%)
Buccal Mucosa
Palate
Lower Lip

8. Major Salivary Glands

9. CAUSE:
Unknown
AGE:
Adult; older than 50
years old
GENDER:
Female

10. Clinical Features:
Rounded
mass
Firm but movable

11. Clinical Features:
Slow-growing
Asymptomatic

12. Clinical Features:
COLOR:
normal; bluish

13. HISTOPATHOLOGY
Bilayered
strands of basaloids
cells that branch and
anastomoses within a delicate
stroma
Highly
vascular
Contains:
collagen
FEW fibroblasts; LITTLE

15. HISTOPATHOLOGY
Individual
cells= columnar
with moderate to
abundant amounts of
eosinophilic cytoplasm

16. HISTOPATHOLOGY
May
not be totally
encapsulated
20%
cases= multifocal

17. Treatment
Surgical
excision (inclusion of a
cuff of clinically normal tissue)

18. Prognosis
Good.
20% multifocal, recurrence
may occur