All of the following are histopathological findings of papillary carcinoma, except
Pathology

Papillary projections
Psammoma bodies (concentric calcifications)
Pale empty (orphan annie) nuclei → FINELY DISPERSED CHROMATIN IMPARTS AN EMPTY APPEARANCE


Intranuclear grooves and nuclear characteristics are diagnostic of papillary carcinoma
Multifocality is common in papillary carcinoma
TSH levels are high; tumors are TSH dependent, hence follow-up with TSH.

Key Concept:

Multifocality is common (up to 85% of cases) on microscopic examination.
Multifocality is associated with an increased risk of cervical nodal metastases, rarely invade adjacent structures such as the trachea, esophagus, and RLNs.

RLN implies lymph nodes.
Orphan Annie eye nuclei
Psammoma bodies
Monofocal papillary projections
Intranuclear grooves