A curious case of a large renal cyst

Here is an image of the right kidney obtained from an end-stage kidney disease patient. At first glance, it appears as expected: thin parenchyma, prominent peri-renal fat as you would […]

Incidental fluid seen during kidney biopsy

In a twitter poll asking what the asterisk indicated, only ~55% of the respondents (total 338 votes) answered correctly. This is an image of the left kidney obtained from the […]

Renal allograft and ascites

While evaluating a transplanted kidney, we should pay particular attention to the surgical anatomy, presence of ureteral stent, and perinephric collections in addition to ruling out hydronephrosis. Below are examples […]

IVC and the right pleural effusion

In a twitter poll asking what the arrow was pointing to in this image, only ~54% answered correctly. The correct answer is right pleural effusion. Below illustration explains why the […]

Jellyfish in the pleural effusion after CPR

Here is an image of the right pleural effusion obtained from a dialysis patient who suffered a cardiac arrest and being evaluated by nephrology for continuous renal replacement therapy. Below […]

What is VExUS?

VExUS is venous excess ultrasound grading system intended to quantify systemic venous congestion, which is particularly important in patients with tenuous fluid volume status (e.g. those with right sided heart […]