Objective To investigate the clinical and pathological characteristics, diagnosis, and differential diagnosis of clear cell papillary renal cell tumour (CCPRCT), aiming to enhance the understanding of this tumour. Methods Clinical data, histopathological patterns, immunohistochemical and molecular assay results of four patients with CCPRCT were retrospectively analysed, followed up and reviewed in the literature. Results The study included four patients, two males and two females, aged between 39 and 73 years. One of the patients had a history of end-stage renal disease. The masses observed had a maximum diameter ranging from 1 to 3.5 cm, were well-defined, either solid or cystic, and had a color ranging from grayish-white to grayish-yellow and grayish-red. Under the light microscope, the tumour cells were arranged in tubular, papillary, vesicular or cystic shapes with varying proportions. The tumour cells were small and cubic with transparent cytoplasm. The World Health Organization/International Society of Urological Pathology (WHO/ISUP) nuclear grading was 1-2 for the tumour cells, and the characteristic nuclei were neatly arranged at the lumen edge away from the basement membrane. There was no renal sinus invasion, vascular invasion, coagulation necrosis, or other aggressive tumour features. The immunophenotypes of the tumour cells were positive for cytokeratin (CK)7, carbonic anhydrase (CA)Ⅸ, pan-cytokeratin (panCK) AE1/AE3 and vimentin, partially positive for CD10, and negative for P504S, CD117 and TFE3. The fluorescence in situ hybridization did not show any 3p deletion. Follow-up was conducted on three cases for 8-78 months, and none of them experienced tumour recurrence or metastasis. Conclusion CCPRCT is a rare renal tumour with a good clinical prognosis. It is important to differentiate it from common low-grade clear cell renal cell carcinoma and papillary renal cell carcinoma. Accurate diagnosis can improve the quality of patients' survival.
WU Yunjin
,
LI Jie
,
ZHANG Tingting
,
FAN Desheng
. Clinicopathological features of clear cell papillary renal cell tumour: Report of four cases[J]. Surgical Research and New Technique, 2024
, 13(3)
: 192
-196
.
DOI: 10.3969/j.issn.2095-378X.2024.03.003
[1] Moch H, Amin MB, Berney DM, et al.The 2022 World Health Organization classification of tumours of the urinary system and male genital organs-Part A: renal, penile, and testicular tumours[J]. Eur Urol, 2022, 82(5): 458-468.
[2] Moch H, Cubilla AL, Humphrey PA, et al.The 2016 WHO classification of tumours of the urinary system and male genital organs-Part A: renal, penile, and testicular tumours[J]. Eur Urol, 2016, 70(1): 93-105.
[3] Williamson SR.Clear cell papillary renal cell carcinoma: an update after 15 years[J]. Pathology, 2021, 53(1): 109-119.
[4] 简远熙,陈梦林,柳瑞,等.透明细胞乳头状肾细胞肿瘤的CT和MRI表现[J].中国医学影像学杂志,2023,31(4):405-409.
[5] Kim SH, Han J, Jeong SH, et al.Clinical features and surgical outcome of clear cell papillary renal cell tumor: result from a prospective cohort[J]. BMC Urol, 2023, 23(1): 41.
[6] 杨晓群,苗娜,甘华磊,等.透明细胞乳头状肾细胞癌的临床病理特征[J].中华病理学杂志,2015,44(6):372-376.
[7] Da Paz AR, De Souza MF, Santana CMM,et al.Clear cell papillary renal cell tumors: a study of 42 tumors with emphasis on the fibrous capsule, cystic component, and GATA3 immunohistochemistry[J]. Int J Surg Pathol, 2023, 31(1): 38-45.
[8] Wang Y, Ding Y, Wang J, et al.Clinical features and survival analysis of clear cell papillary renal cell carcinoma: a 10-year retrospective study from two institutions[J]. Oncol Lett, 2018, 16(1): 1010-1022.
[9] Weng S, Dinatale RG, Silagy A, et al.The clinicopathologic and molecular landscape of clear cell papillary renal cell carcinoma: implications in diagnosis and management[J]. Eur Urol, 2021, 79(4): 468-477.
[10] Gobbo S, Eble JN, Grignon DJ, et al.Clear cell papillary renal cell carcinoma: a distinct histopathologic and molecular genetic entity[J]. Am J Surg Pathol, 2008, 32(8): 1239-1245.
[11] 常成东,白燕峰,陈晶晶,等.具有透明细胞乳头状肾细胞癌形态特征的透明细胞性肾细胞癌的临床病理特征[J].中华病理学杂志,2022,51(1):44-46.