The Value of Mitotic Count and Ki67 Proliferation Index in Congenital Mesoblastic Nephroma
FETAL AND PEDIATRIC PATHOLOGY, cilt.35, sa.6, ss.376-384, 2016 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 35 Sayı: 6
- Basım Tarihi: 2016
- Doi Numarası: 10.1080/15513815.2016.1207731
- Dergi Adı: FETAL AND PEDIATRIC PATHOLOGY
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.376-384
- Anahtar Kelimeler: mesoblastic nephroma, pediatric, renal tumor, mitosis, Ki-67, RENAL TUMORS, WILMS-TUMOR, KI-67, NEONATE, TISSUE, FETAL
- İstanbul Üniversitesi Adresli: Evet
Özet
Objective: We aimed to define the histopathologic features and proliferative rate of congenital mesoblastic nephroma (CMN) as a risk factor for recurrence. Methods: Fourteen cases of CMN among 138 registered pediatric renal tumors were retrospectively reviewed. The prognostic impact for mitotic rate and Ki67 index was investigated. Results: There were four (28.6%) classic, six (42.9%) cellular, and four (28.6%) mixed type CMNs, with average Ki-67 counts of 16.75% in the classic CMN, and 53.2% in the tumors with cellular components (both mixed and cellular CMNs). Twelve patients (85.7%) were aged less than six months. Tumors with cellular component showed significantly larger tumor diameter and higher Ki-67 index (p = 0.015 and p = 0.016, respectively). The patient with cellular CMN, whose tumor showed the highest mitotic rate (4.9/HPF), but not the highest Ki67 index (57.4%), died of recurrent disease with distant metastasis. Conclusion: Proliferative markers-mitotic count and Ki67 index-have limited value to predict recurrence or metastasis in CMNs with a cellular component.