Which of the following structures is not found in parotid gland?
STRUCTURES PRESENT WITHIN THE PAROTID GLAND
Three main structures either in part or in whole traverse the gland and branch within it. From superficial to deep these are:

Facial nerve.
Retromandibular vein.
External carotid artery.

Some members of the deep parotid lymph nodes and filaments of auriculotemporal nerve are also located within the gland.
ECA
Facial nerve
Auriculo temporal nerve
Buccal branch of mandibular nerve