The incidence of renal dysplasia in a series of Wilms' tumours is presented. The distribution of such lesions is discussed, together with their course of development and regression. The kidney is regarded as a particularly suitable organ for studying the relation between dysplasia and neoplasia. A schema is suggested for this association with regard to Wilms' tumour.

Tumours that produce metastases in the paranasal sinuses or sphenoidal sinus are rare; the carcinomas of kidney and lung being the most frequent with this type of metastasis. Distant metastases from differentiated thyroid carcinoma are rare and, moreover, when they metastasize, they do so into lung and bone. We report a patient who had a papillary thyroid carcinoma with metastases into the sphe...

Abstract Tumour lysis syndrome (TLS) is a well-recognised oncological emergency caused by rapid destruction of cancer cells. Despite most commonly occurring in haematological malignancies or following initiation chemotherapy, rarely, it occurs solid tumours without any trigger. Release nucleic acids during cell breakdown produces large amounts uric acid resulting crystallisation within the rena...

Metanephric adenoma is a rare benign tumour of the kidney, recently recognised as a unique pathological entity which is radiologically indistinguishable from malignant renal tumours. Inability to achieve a precise preoperative diagnosis could lead to a radical surgical approach for this benign tumour with an excellent prognosis. Only a few cases are reported worldwide, and we document the first...

A primitive neuroectodermal tumour of the kidney is a rare malignancy. We report the computed tomographic features and the histopathological correlation of such a tumour occurring in a middle-aged man. Although the radiological appearance has significant overlap with other renal tumours, this tumour should be included in the differential diagnosis of a large renal mass in younger patients.

The AgNOR argyrophil technique was applied to clear cut examples of renal adenoma (n = 7), clear cell carcinoma (n = 9), and xanthogranulomatous pyelonephritis (n = 5). There was no significant difference between mean AgNOR counts per cell in adenomas and carcinomas, supporting the idea that there is a continuous spectrum of kidney tumours. Xanthogranulomatous pyelonephritis and clear cell carc...