EURORAD ESR

Case 1572

Ectopic thymus presenting as a neck mass in an infant

Author(s)
D. Farina, L. Palvarini, A. Marconi, M.R. Cristinelli, R. Maroldi
 
Patient
[::], 5 month(s)
 
 
  • Figure 1
    Ultrasound

    The lesion (asterisk) appears homogeneously hypoechoic (A, longitudinal; B, transverse) and vascularised with colour Doppler (C). (D) The echogenicity of the mass is comparable to an adjacent normal node (N).

     
    Area of Interest: unknown; Imaging Technique: Ultrasound;
     
     
  • Figure 2
    MR, axial plane

    SE T2-weighted images (A,C) and T1-weighted images (B,D), before and after GD-DTPA administration respectively. The lesion (asterisk) shows intermediate signal in all sequences with mild enhancement. The lesion is in...

     
    Area of Interest: unknown; Imaging Technique: MR, axial plane;
     
     
  • Figure 3
    MR, coronal plane

    SE T2-weighted image (A) and T1-weighted images after GD-DTPA administration (B). The lesion merges with the fibres of constrictor muscle (arrowhead), and the posterior belly of the digastric muscle is completely...

     
    Area of Interest: unknown; Imaging Technique: MR, coronal plane;
     
     
  • Figure 4
    Chest X-ray

    Normal findings.

     
    Area of Interest: unknown; Imaging Technique: Chest X-ray;
     
     
The lesion (asterisk) appears homogeneously hypoechoic (A, longitudinal; B, transverse) and vascularised with colour Doppler (C). (D) The echogenicity of the mass is comparable to an adjacent normal node (N).
 
SE T2-weighted images (A,C) and T1-weighted images (B,D), before and after GD-DTPA administration respectively. The lesion (asterisk) shows intermediate signal in all sequences with mild enhancement. The lesion is in contact with the submandibular gland (black arrows) and the posterior belly of the digastric muscle is "encased" by the lesion (arrowheads). The deepest part of the mass reaches the oropharyngeal wall at the level of the suprahyoid epiglottis (white arrow).
 
SE T2-weighted image (A) and T1-weighted images after GD-DTPA administration (B). The lesion merges with the fibres of constrictor muscle (arrowhead), and the posterior belly of the digastric muscle is completely surrounded by the mass.
 
Normal findings.
 
 
 
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