Key Action Statement 2B: Clinicians should perform ultrasonography as the initial imaging modality when the diagnosis of IH is uncertain (grade C, weak recommendation).

Aggregate Evidence QualityGrade C
BenefitsSelect the appropriate imaging study to aid in diagnosis and identify associated abnormalities; avoid ionizing radiation and sedation
Risks, harm, costRisk that ultrasonography may not be sufficiently diagnostic or may result in the misdiagnosis of a lesion believed to represent an IH
Benefit-harm assessmentBenefits outweigh harms
Intentional vaguenessNone
Role of patient preferenceMinimal
StrengthWeak recommendation
Key references47,50