title: [Topography of tumoral and pseudotumoral lesions of the proximal femur].
abstract: This study of the topographic distribution of tumoral and pseudotumoral lesions of the proximal femur shows that certain lesions have a preferential site, for example osteoid osteoma affects the internal cortex of the neck and diaphysis or the intertrochanteric zone; chondroblastoma occurs in zones of epiphyseal ossification of the head; fibrous dysplasia affects the femoral neck, while sparing the epiphyseal femoral head and trochanters. The island of osteosclerosis is situated, at least partially, in the support fan; so-called physiological cysts are situated on or above the midline of the neck and below the basicapital line. Osteolytic or mixed metastases preferentially involve Ward's triangle in the femoral neck and the intertrochanteric region. The sites of these lesions therefore appears to depend on the bony architecture which, in turn, is dependent on mechanical stresses. However, this purely morphological study fails to demonstrate whether mechanical stresses influence the development of these lesions.
authors.affiliation: Service de Radiologie, Hôpital Saint-Antoine, Paris.
authors.forename: J D
authors.initials: JD
authors.lastname: Laredo
authors.forename: B
authors.initials: B
authors.lastname: Bonnin
authors.forename: J F
authors.initials: JF
authors.lastname: Naouri
authors.forename: P
authors.initials: P
authors.lastname: Martin-Bouyer
authors.forename: L
authors.initials: L
authors.lastname: Bellaiche
authors.forename: B
authors.initials: B
authors.lastname: Hamze
authors.forename: J M
authors.initials: JM
authors.lastname: Tubiana
mesh_terms: D001845:Bone Cysts / Q000000981:diagnostic imaging; D002804:Chondroblastoma / Q000000981:diagnostic imaging*; D005266:Femoral Neoplasms / Q000000981:diagnostic imaging* / Q000556:secondary; D005270:Femur Head / Q000000981:diagnostic imaging*; D005357:Fibrous Dysplasia of Bone / Q000000981:diagnostic imaging*; D005358:Fibrous Dysplasia, Monostotic / Q000000981:diagnostic imaging; D006801:Humans; D008067:Lipoma / Q000000981:diagnostic imaging; D010017:Osteoma, Osteoid / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed
vernacular_title: Essai de cartographie des lésions tumorales et pseudo-tumorales de l'extrémité supérieure du fémur.