Parotid infantile hemangioma

Last revised by Ammar Haouimi on 7 Nov 2020

Parotid infantile hemangiomas are the most common parotid tumor of childhood. They usually run a characteristically benign course.

The median age at diagnosis is 4 months 1. There is a female preponderance with a male: female ratio of 1:3.

Presents as an enlarging parotid mass in an infant that was not present at birth. a cutaneous component (e.g. strawberry lesion) may be present. They can occasionally act as significant vascular shunts if they do not involute.

  • homogeneous echogenic parotid mass
    • lobulated
    • fine echogenic internal septations
    • replaces or expands parotid tissue
  • large internal vessels
    • rarely flow only seen on gray-scale as it is too low to be seen on Doppler
  • T1: intermediate signal, between that of muscle and fat
  • T2: hyperintense
    • prominent flow voids
  • T1 C+ (Gd): homogeneous enhancement

Surgery is usually avoided since there is a risk of facial nerve damage and most lesions resolve over time either spontaneously or with medical therapy 5.

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Cases and figures

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