# Rare renal metastasis: Oligometastatic non-small cell lung cancer diagnosed with ultrasound guided renal biopsy

## TL;DR

This paper presents a rare case of lung cancer spreading to the kidney, diagnosed through a guided biopsy.

## Contribution

The paper highlights the diagnostic value of image-guided renal biopsy in identifying rare renal metastases.

## Key findings

- A solitary non-small cell lung cancer metastasis to the kidney was confirmed via image-guided biopsy.
- Radiological features and multidisciplinary collaboration are crucial for diagnosing rare renal metastases.
- Accurate immunohistochemical pathology is essential for differentiating metastatic from primary kidney tumors.

## Abstract

Metastatic renal masses present an uncommon diagnostic dilemma. Differentiating malignant metastatic renal lesions from primary renal malignancy relies on a high index of suspicion, multidisciplinary discussion, comprehensive radiological work up and finally, accurate immunohistochemical pathology findings. Here we present a rare case of solitary non-small cell lung cancer metastases to the kidney definitively diagnosed with image guided renal biopsy. We emphasize both the salient radiological features of such masses, as well as the vital role of image guided renal biopsies in such settings. The pivotal role of the radiologist within the oncological multidisciplinary team meeting is also illustrated.