[Diagnosis of a fibrosarcoma of the psoas presenting with fever only by gallium citrate scintigraphy (author's transl)].
A fibrosarcoma of the psoas in a 62-year-old woman manifested itself essentially by a febrile syndrome for approximately one year. It would appear that the first manifestation of the lesion occurred three years previously (lumbar pain). Careful clinical examination, numerous radiological studies and two exploratory laparotomies failed to reveal the site of the lesion. The latter was finally demonstrated by GaC67 gammagraphy. This case thus confirms the great value of this radioactive tracer in the diagnostic study of a febrile syndrome as a tumour syndrome. It would appear to be perhaps desirable, in this pathological context, to request a whole body study using GaC67 before proceeding to exploratory laparotomy.