Desmoplastic Fibroma: A Case Report

Abstract

We have recently seen one case of an uncommon bone tumor that was first reported by Jaffe in 1958 and called desmoplastic fibroma.The details of our case are following.A sixteen-years old male, college student, was admitted to Kumamoto University Hospital in April 1965, complaining of swelling in the distal end of left forearm which had begun two years ago. There was no history of trauma. When examined, the patient appeared to be good in general health. Local examination revealed the large tumor at the distal end of radius with slight tenderness, but no fluctuation or redness. The dorsiflexion and volar flexion of left wrist joint were limited passively, but there was no paresis of finger. The physical examination of chest and abdomen revealed no abnormality.Laboratory data: haemoglobin 15.6g/dl; red blood cells 509×104; white blood cells 6, 000. Chemical studies: serum calcium 10.0mg/dl: serum phosphorus 4.0mg/dl: serum alkaline phosphatase 5.8 Bodansky units, serum acid phosphatase 3.6 King and Armstrong unit. When the lesion was surgically exposed, a rubbery, whitish tumor was found that in general peeled out easily. Microscopically this tumor consisted of abundant, rich collagenous intracellular material in which there is a relatively small number of small consistently similar fibroblasts of benign appearance. The patient was without evidence of reccurrence one year after operation.