What condition could Doug, age 6, likely have based on his symptoms?

To determine the most likely condition for Doug based on his symptoms, considering he is six years old, it is essential to look at the signs and characteristics associated with Wilms tumor. This type of kidney cancer most commonly occurs in children and can present with symptoms such as abdominal swelling or a palpable mass, hematuria (blood in urine), and sometimes pain or discomfort in the abdominal area.

In a child, a mass or swelling in the abdomen is particularly concerning for Wilms tumor, as is any unexplained abdominal pain or changes in urinary habits. Additionally, this age group is most commonly affected by Wilms tumor compared to adults or older children, making it a significant consideration.

The other conditions listed might present similar symptoms but typically in different contexts or age groups. For instance, urinary tract infections are more prevalent in females, while appendicitis often presents with specific symptoms such as right lower quadrant pain, which may not be as common in this scenario. An intestinal obstruction is a serious condition that may present with severe abdominal pain, vomiting, and abdominal distension but does not align with the typical presentation of Wilms tumor.

Thus, on the basis of the age of Doug and the symptoms that closely associate with a significant abdominal mass, Wilms