Table 1.

Predefined inclusion and exclusion criteria for articles to be included in the final review.

Inclusion criteria	Exclusion criteria
Human studies	Non-human, animal or bench research
English language	Non-English language
Ultrasound compared with histology	Ultrasound guided biopsy only
Lipomas	No histological comparison
	Lipomas not specifically identified
	Other imaging modality used instead of ultrasound