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.
- homogenous echogenic parotid mass
- 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
- prominent flow voids
- T1 C+ (Gd): homogeneous enhancement
Treatment and prognosis
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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