Juxtaoral organ

The juxtaoral organ, or organ of Chievitz, is a small, elongated epithelial structure located laterally to the buccinator muscle in the soft tissues of both cheeks.

Role as mechanoreceptor

It consists of a central, branching epithelial cord (parenchyma) embedded within connective tissue rich in nerve fibres and sensory receptors. The epithelial cells are closely associated with nerve endings, suggesting a possible sensory or mechanoreceptive role.

Histology

Histologically, the juxtaoral organ is characterized by:

• Non-keratinized epithelial cords with occasional follicles containing colloid-like material.

• A surrounding dense, perineurium-like connective tissue capsule.

• A distinctive histochemical enzyme profile within the epithelial parenchyma.

Embryology

Embryologically derived from oral ectoderm, the juxtaoral organ persists in adults as a vestigial structure. Its main clinical relevance lies in histopathology — it may mimic perineural invasion by carcinoma if not correctly recognized.