WHO histological classification of benign renal neoplasms

Last revised by Daniel J Bell on 4 Oct 2021

Benign renal tumours were histologically classified according to the World Health Organizatiοn​ 1. This is the subset of entities in the 2016 WHO classification of renal tumours that are associated with an International Classification of Diseases for Oncology (ICD-O) behaviour code of 0, indicating benign tumours. This article also separately includes entities with a behaviour code of 1, indicating unspecified, borderline, or uncertain behaviour. The remainder of entities in the WHO classification are considered malignant.

Benign tumours

Renal cell tumours
Metanephric tumours
Nephroblastic and cystic tumours occurring mainly in children
Mesenchymal tumours occurring mainly in children
Mesenchymal tumours occurring mainly in adults
Mixed epithelial and stromal tumour family
Neuroendocrine tumours

Tumours of unspecified, borderline, or uncertain behaviour

Renal cell tumours
Metanephric tumours
Nephroblastic and cystic tumours occurring mainly in children
Mesenchymal tumours occurring mainly in children
Mesenchymal tumours occurring mainly in adults

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