Journal List > Korean J Urol > v.48(7) > 1004967

Lee, Lee, Kim, Park, Park, Kim, and Kim: Solitary Fibrous Tumor of the Renal Peripelvis

Abstract

A solitary fibrous tumor (SFT) is a rare spindle cell neoplasm that arises most commonly in the pleura but has recently been described in various extrapleural sites. SFTs occurring in the renal pelvis or peripelvis are extremely rare, and only 3 cases have been reported. We report here on a 71-year-old woman who presented with an incidentally detected left renal mass and underwent radical nephroureterectomy under the suspicion of renal pelvis cancer. The pathological examination of the tumor revealed a SFT occurring in the renal peripelvis. The patient has no evidence of disease 1 year after the surgery. Most SFTs appear to pursue a benign course, although, because some of them have the potential to recur or metastasize, careful long-term follow-up is necessary.

References

1. Znati K, Chbani L, El Fatemi H, Harmouch T, Kamaoui I, Tazi F, et al. Solitary fibrous tumor of the kidney: a case report and review of the literature. Rev Urol. 2007; 9:36–40.
2. Mentzel T, Bainbridge TC, Katenkamp D. Solitary fibrous tumour: clinicopathological, immunohistochemical, and ultrastructural analysis of 12 cases arising in soft tissues, nasal cavity and nasopharynx, urinary bladder and prostate. Virchows Arch. 1997; 430:445–53.
crossref
3. Kim DS, Cha KB, Lee SR, Kim DJ, Cho NH, Choi YD. Solitary fibrous tumor of bladder. Korean J Urol. 2004; 45:393–5.
4. Fine SW, McCarthy DM, Chan TY, Epstein JI, Argani P. Malignant solitary fibrous tumor of the kidney: report of a case and comprehensive review of the literature. Arch Pathol Lab Med. 2006; 130:857–61.
crossref
5. Yazaki T, Satoh S, Iizumi T, Umeda T, Yamaguchi Y. Solitary fibrous tumor of renal pelvis. Int J Urol. 2001; 8:504–8.
crossref
7. Wang J, Arber DA, Frankel K, Weiss LM. Large solitary fibrous tumor of the kidney: report of two cases and review of the literature. Am J Surg Pathol. 2001; 25:1194–9.
8. Yamada H, Tsuzuki T, Yokoi K, Kobayashi H. Solitary fibrous tumor of the kidney originating from the renal capsule and fed by the renal capsular artery. Pathol Int. 2004; 54:914–7.
crossref
9. Hasegawa T, Matsuno Y, Shimoda T, Hasegawa F, Sano T, Hirohashi S. Extrathoracic solitary fibrous tumors: their histological variability and potentially aggressive behavior. Hum Pathol. 1999; 30:1464–73.
crossref
10. Morimitsu Y, Nakajima M, Hisaoka M, Hashimoto H. Extrapleural solitary fibrous tumor: clinicopathologic study of 17 cases and molecular analysis of the p53 pathway. APMIS. 2000; 108:617–25.

Fig. 1.
Contrast-enhanced CT scan shows a 3x3cm sized, enhanced, well-demarcated mass in the left renal pelvis area.
kju-48-748f1.tif
Fig. 2.
Left retrograde pyelogram demonstrates a mass extrinsically compressing infundibula between mid and lower calyx.
kju-48-748f2.tif
Fig. 3.
Microscopically, the tumor is composed of spindle cells with patternless arrangement in a collagenous stroma (H&E, x200).
kju-48-748f3.tif
Fig. 4.
Tumor cells show diffuse immuno-positivity for CD34 (x200).
kju-48-748f4.tif
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