Limp as unusual presentation of Langerhans' cell histiocytosis.
An isolated eosinophilic granuloma involving the posterior elements of a lumbar vertebra is reported in a 3-year-old boy presenting with progressive limp. Radiological investigations revealed osteolysis of the L5 right pedicle. MRI showed a well-defined homogeneous mass with nonspecific signal intensity. An unusual feature was the paravertebral muscular location of the largest part of the tumour indicating a possible soft tissue origin. Immunohistochemical studies were typical for Langerhans' cell histiocytosis.


CONCLUSIONS
A limp can be due to lumbar and paravertebral muscular location of Langerhans' cell histiocytosis.
Bodart
E
E
Department of Paediatrics, Cliniques UCL de Mont-Godinne, Yvoir, Belgium.
Nisolle
J F
JF
Maton
P
P
Delos
M
M
Trigaux
J P
JP
Gilliard
C
C
Tuerlinckx
D
D
Ninane
J
J
D002675:Child, Preschool; D005684:Gait; D006646:Histiocytosis, Langerhans-Cell / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D006801:Humans; D008159:Lumbar Vertebrae; D008279:Magnetic Resonance Imaging; D008297:Male; D013122:Spinal Diseases / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery