disease has major feature mixed neuronal-glial tumor Lhermitte-Duclos disease Lhermitte-Duclos disease (LDD) is a very rare disorder characterized by abnormal development and enlargement of the cerebellum, and an increased intracranial pressure. LDD GARD:0006901 dysplastic gangliocytoma of cerebellum dysplastic gangliocytoma of the cerebellum NCIT:C8419 MONDO:0019002 UMLS:C0391826 dysplastic cerebellar gangliocytoma MEDGEN:140251 Orphanet:65285 ICDO:9493/0 central nervous system malformation