Solitary XXXX of the calvaria.

@entity1712 @entity1 @entity690 @entity738
AIMS AND BACKGROUND: Histiocytosis X is a condition characterized by an abnormal proliferation of histiocytes with a variable @entity738 and inflammatory component; bone involvement is almost always present. The aim of this study was to define the management of solitary @entity1712 ( @entity1712 ) of the calvaria in adult @entity1 , in relation to the size and site of the lesion. METHODS: Fourteen @entity1 , ranging in age from 7 to 45 years, with solitary @entity1712 of the calvaria were surgically treated by craniectomy or curettage and cranioplasty. We subgrouped the lesions into two types: A) lesions localized inside the diplo   and/or compressing the cerebral parenchyma below but without dural infiltration; B) lesions with mainly intracranial growth, compressing the cerebral parenchyma and infiltrating the dura. The infiltrated dura mater in type B lesions was replaced with a dural patch. Cranioplasty was performed in lesions with a diameter of 4 cm or more and/or located in aesthetically exposed areas of the skull. RESULTS: None of the @entity1 died during the study and no local or systemic recurrences were observed during follow-up (min. 3 yrs, max. 8 yrs). CONCLUSIONS: Surgical treatment of @entity1 with isolated @entity1712 of the calvaria not only is simple and quick but also allows histological diagnosis of the @entity690 . These @entity1 do not require further adjuvant treatment. Cranioplasty should be performed when the lesion has a diameter of 4 cm or more, when it is located in aesthetically exposed areas of the skull such as the frontal or temporal bones, or when it produces alterations of the normal skull morphology.
