OBJECTIVE: We describe the MR findings of two cases of neurocutaneous melanosis (NCM) associated with inferior vermian hypoplasia (IVH). MATERIALS AND METHODS: Two cases of NCM associated with IVH are presented. Both patients had congenital giant hairy nevi and multiple satellite lesions. RESULTS: Magnetic resonance imaging revealed IVH as well as hyperintensities in the pons and the cerebellar leptomeninges on T1-weighted images. The hyperintensities may be ascribed to the T1-shortening effect of melanin. A right parietal tumor in one patient and unilateral ventriculomegaly in another patient were also depicted. CONCLUSIONS: Magnetic resonance demonstration of the T1-shortening leptomeningeal infiltrations adds weight to the diagnosis of NCM. The implication of the concurrence of NCM and IVH is discussed.
OBJECTIVE: We describe the MR findings of two cases of neurocutaneous melanosis (NCM) associated with inferior vermian hypoplasia (IVH). MATERIALS AND METHODS: Two cases of NCM associated with IVH are presented. Both patients had congenital giant hairy nevi and multiple satellite lesions. RESULTS: Magnetic resonance imaging revealed IVH as well as hyperintensities in the pons and the cerebellar leptomeninges on T1-weighted images. The hyperintensities may be ascribed to the T1-shortening effect of melanin. A right parietal tumor in one patient and unilateral ventriculomegaly in another patient were also depicted. CONCLUSIONS: Magnetic resonance demonstration of the T1-shortening leptomeningeal infiltrations adds weight to the diagnosis of NCM. The implication of the concurrence of NCM and IVH is discussed.
Authors: Martino Ruggieri; Agata Polizzi; Stefano Catanzaro; Manuela Lo Bianco; Andrea D Praticò; Concezio Di Rocco Journal: Childs Nerv Syst Date: 2020-10-13 Impact factor: 1.475
Authors: Winnie C W Chu; Vincent Lee; Yu-leung Chan; Matthew M K Shing; Ki-wai Chik; Chi-kong Li; Kwok-chiu Ma Journal: AJNR Am J Neuroradiol Date: 2003-02 Impact factor: 3.825