Agenesis of the internal carotid artery with a trans-sellar anastomosis: CT and MRI findings in late-onset congenital hypopituitarism.
A 29-year-old woman with a history of hypothyroidism since early childhood developed hypopituitarism. CT and MRI revealed anterior pituitary hypoplasia, an ectopic posterior lobe, a Chiari I malformation and agenesis of the right internal carotid artery with a trans-sellar anastomosis. This constellation of findings constitutes a previously unreported association in congenital hypopituitarism of late onset. The usefulness of imaging modalities and the pathogenic implications are also discussed.
Mellado
J M
JM
Institut de Diagnòstic per la Imatge, Centre de Ressonància Magnètica de Tarragona, Hospital Joan XXIII, Spain. JMMellado@teleline.es
Merino
X
X
Ramos
A
A
Salvadó
E
E
Saurí
A
A
D000015:Abnormalities, Multiple; D000328:Adult; D001163:Arteriovenous Anastomosis; D002343:Carotid Artery, Internal / Q000002:abnormalities*; D005260:Female; D006801:Humans; D007018:Hypopituitarism / Q000151:congenital*; D007037:Hypothyroidism; D008279:Magnetic Resonance Imaging; D012658:Sella Turcica; D014057:Tomography, X-Ray Computed