Giant hypothalamic hamartoma associated with an intracranial cyst in a newborn.
We report the case of a giant hypothalamic hamartoma with a large intracranial cyst in a neonate. On ultrasonography, the lesion presented as a lobulated, mass-like lesion with similar echogenicity to the adjacent brain parenchyma, located anterior to the underdeveloped and compressed left temporal lobe, and presenting as an intracranial cyst in the left cerebral convexity without definite internal echogenicity or septa. The presence of a hypothalamic hamartoma and intracranial neurenteric cyst were confirmed by surgical biopsy. The association of a giant hypothalamic hamartoma and a neurenteric cyst is rare. Due to the rarity of this association, the large size of the intracranial cyst, and the resulting distortion in the regional anatomy, the diagnosis of the solid mass was not made correctly on prenatal high-resolution ultrasonography.
Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Seoul, Korea.
Joo Yeon
0000-0001-8964-7107
JY
Lee
Department of Radiology, Kangwon National University Hospital, Chuncheon, Korea.
Hye-Kyung
0000-0001-7547-0320
HK
Yoon
Department of Pathology, University of Ulsan College of Medicine, Seoul, Korea.
Shin Kwang
0000-0003-3707-6802
SK
Khang
Central nervous system cysts; Hypothalamic hamartomas; Infant, newborn; Magnetic resonance imaging; Ultrasonography