Presentation
Renal mass on ultrasound.
Patient Data
Age: 55 years
Gender: Female
From the case:
Renal cyst - Bosniak I
{"current_user":null,"step_through_annotations":true,"access":{"can_edit":false,"can_download":true,"can_toggle_annotations":true,"can_feature":false,"can_pin":false},"extraPropsURL":"/studies/27675/annotated_viewer_json?lang=us"}
Hypoattenuating cysts characterized as homogeneous thin-walled and nonenhancing fluid-attenuation lesions.
From the case:
Renal cyst - Bosniak I
{"current_user":null,"step_through_annotations":true,"access":{"can_edit":false,"can_download":true,"can_toggle_annotations":true,"can_feature":false,"can_pin":false},"extraPropsURL":"/studies/27699/annotated_viewer_json?lang=us"}
Illustration of the commonest type of Bosniak cyst - a type I ( simple cyst ).
Case Discussion
Hypoattenuating cysts characterized as homogeneous thin-walled, nonenhancing fluid-attenuation lesions are classified on Bosniak category I, and are rarely problematic when encountered incidentally at contrast–enhanced CT.