Spontaneous regression of bone metastasis from renal cell carcinoma; a case report.
BACKGROUND
Spontaneous regression of metastatic renal cell carcinoma is rarely observed.


METHODS
Metastatic renal cell carcinoma was identified in a 70-year-old male using computed tomography-guided percutaneous needle biopsy. Two months after the diagnosis, a partial resection of the sternal bone was performed. Pathological examination revealed granulated tissue with bleeding and necrosis but no carcinogenic cells.


CONCLUSIONS
We report a pathologically identified case in which a sternal bone metastasis that was noticed two years after radical nephrectomy regressed completely and spontaneously.
Nakajima
Takahiro
T
Division of Thoracic Diseases, Chiba Cancer Center, Japan. nakajii@fc.med.miyazaki-u.ac.jp
Suzuki
Makoto
M
Ando
Soichiro
S
Iida
Tomohiko
T
Araki
Akinobu
A
Fujisawa
Takehiko
T
Kimura
Hideki
H
D000368:Aged; D001707:Biopsy, Needle; D001859:Bone Neoplasms / Q000473:pathology / Q000556:secondary*; D002292:Carcinoma, Renal Cell / Q000473:pathology* / Q000601:surgery; D006470:Hemorrhage; D006801:Humans; D008297:Male; D009336:Necrosis; D009392:Nephrectomy; D012075:Remission, Spontaneous; D014057:Tomography, X-Ray Computed