Sammanfattning
BACKGROUND – Osteosarcomas are malignant bone tumours
in which cells of mesenchymal origin produce osteoid. Less
than 0,2 % of new cancer cases per year are osteosarcomas,
of which 8% are present in the axial skeleton, consisting of
the cranium, the vertebral columna, costae and sternum.
The incidence is highest in younger adults and the primary
treatment is surgery.
CASE STUDY – A 13-year-old boy was in conjunction with
orthodontic treatment referred to Clinic of Oral and Maxillofacial
Surgery at Copenhagen University Hospital, Rigshospitalet
for removal of a tumour in the region of the second
premolar and first molar in the upper left jaw. Histological examination
showed a low-grade osteosarcoma. Subsequently,
en bloc resection was carried out with simultaneous removal
of the second premolar and first molar in the upper left jaw.
There was no need for further surgery or chemotherapy and
the patient made a full recovery by 2-year control.
CONCLUSION – A solid, well-defined, slow growing swelling
of the upper jaw may represent various pathological conditions.
Histological examination is necessary in order to make
a definitive diagnosis and initiate relevant treatment.