Fig. 2: Clinico-radiological correlation of the disease course.

a MRI of the tumor (coronal cut) before initiation of treatment with larotrectinib (tumor encircled). b Clinical picture of the patient’s neck before treatment initiation (tumor encircled). c MRI of the tumor (coronal cut) 2 months after treatment with larotrectinib (tumor encircled). d Clinical picture of the patient’s neck 3 weeks after treatment initiation (tumor encircled).