Wilms tumor commonly presents as what sign?

Wilms tumor commonly presents as what sign?

• A. Painful abdominal mass
• B. Abnormal bulging on one side of the abdomen
• C. Bilateral distension
• D. Vomiting

Answer: (B)

Wilms tumor presents most characteristically as a painless, unilateral abdominal mass that distorts the abdomen’s contour. In a child, this shows up as an abnormal bulge on one side of the abdomen where the kidney tumor grows, producing a firm, non-tender mass. This unilateral, localized bulge is what clinicians look for, differentiating it from issues that cause pain, diffuse distension, or vomiting. So the described sign—an abnormal bulge on one side of the abdomen—fits Wilms tumor because the tumor originates in one kidney and enlarges mass effect on that flank. Painful masses are less typical for Wilms, bilateral distension would imply involvement of both sides or a systemic process, and vomiting isn’t a classic presenting feature.

Wilms tumor presents most characteristically as a painless, unilateral abdominal mass that distorts the abdomen’s contour. In a child, this shows up as an abnormal bulge on one side of the abdomen where the kidney tumor grows, producing a firm, non-tender mass. This unilateral, localized bulge is what clinicians look for, differentiating it from issues that cause pain, diffuse distension, or vomiting.

So the described sign—an abnormal bulge on one side of the abdomen—fits Wilms tumor because the tumor originates in one kidney and enlarges mass effect on that flank. Painful masses are less typical for Wilms, bilateral distension would imply involvement of both sides or a systemic process, and vomiting isn’t a classic presenting feature.