Correction to: Comparison of three different methods of internal sinus lifting for elevation heights of 7 mm: an ex vivo study.

An amendment to this paper has been published and can be accessed via the original article.

Ultrasound-guided needle aspiration: impact of immediate cytologic review.

Objectives/hypothesis: To compare the diagnostic adequacy of ultrasound-guided fine-needle aspiration biopsy (USFNA) of the head and neck with immediate on-site microscopic evaluation and feedback by a cytopathologist (IMMEDIATE) versus delayed examination without immediate feedback (DELAYED).

Study Design: Retrospective chart review of office-based USFNA performed in both IMMEDIATE and DELAYED settings by the same otolaryngologist.

Methods: A total of 199 USFNA procedures in the head and neck were performed by one practitioner.