Midline cutaneous lumbosacral lesions: not always a sign of occult spinal dysraphism.
OBJECTIVE
The authors report two unusual cases of extraspinal midline lumbosacral lesions that resembled the usual skin markers of occult spina bifida.


METHODS
The pathological diagnosis of the masses was plexiform neurofibroma and mastocytoma, respectively.


RESULTS
Some lesions, as those we are reporting, although occurring at the lumbosacral midline, do not necessarily belong to occult spinal dysraphism, as was initially suspected. Plexiform neurofibroma and skin mastocytoma are very rare indeed in this spinal location.


CONCLUSIONS
The two cases represent an important addition to the differential diagnosis of a congenital dorsal midline mass.
Martínez-Lage
Juan F
JF
Regional Service of Neurosurgery, "Virgen de la Arrixaca" University Hospital, El Palmar, 30120, Murcia, Spain. juanf.martinezlage@carm.es
Niguez
Belen Ferri
BF
Pérez-Espejo
Miguel A
MA
Almagro
María J
MJ
Maeztu
Concepción
C
D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008161:Lumbosacral Region; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D034801:Mastocytoma / Q000175:diagnosis*; D009455:Neurofibroma / Q000175:diagnosis*; D016135:Spinal Dysraphism / Q000175:diagnosis