biostudies-literatureUnknown29Chen T<b>Aims:</b> We present a 5-case series of low-grade oncocytic tumour of the kidney to further discuss their clinicopathological characteristics. <b>Methods and results:</b> Five patients were included in this study. There were three females and two males aged 45-66 years, with a median age of 65 years. Four tumours were located in the right kidney, and one was located in the left kidney. Most of the tumour sections were yellow-brown in colour. Tumour sizes ranged from 2.5 to 4.5 cm, with a median size of 3 cm. Microscopically, the tumours were well-circumscribed but lacked a fibrous capsule; the tumours consisted of monomorphous oncocytic cells arranged mainly in solid and nested architectural patterns. The tumour cells had uniformly round to oval nuclei and often had perinuclear halos buPathology oncology research : POR1610852https://www.ebi.ac.uk/biostudies/studies/S-EPMC9928737biostudies-literatureLow-grade oncocytic tumour (LOT) of the kidney is characterised by GATA3 positivity, FOXI1 negativity and mTOR pathway mutations.PMC9928737Peng YWu CLei TWang HChen TShi YfalseLow-grade oncocytic tumour (LOT) of the kidney is characterised by GATA3 positivity, FOXI1 negativity and mTOR pathway mutations.<b>Aims:</b> We present a 5-case series of low-grade oncocytic tumour of the kidney to further discuss their clinicopathological characteristics. <b>Methods and results:</b> Five patients were included in this study. There were three females and two males aged 45-66 years, with a median age of 65 years. Four tumours were located in the right kidney, and one was located in the left kidney. Most of the tumour sections were yellow-brown in colour. Tumour sizes ranged from 2.5 to 4.5 cm, with a median size of 3 cm. Microscopically, the tumours were well-circumscribed but lacked a fibrous capsule; the tumours consisted of monomorphous oncocytic cells arranged mainly in solid and nested architectural patterns. The tumour cells had uniformly round to oval nuclei and often had perinuclear halos bu2023-01-01T00:00:00Z20232026-04-08T14:35:52.273Z2025-02-18T23:44:17.881ZS-EPMC99287373681654310.3389/pore.2023.1610852