Questions: Match the following: PKD autosomal recessive form. Cysts develop in the kidney and usually develop just after birth or in early childhood.

To address the question, we need to match the descriptions provided with the correct conditions or terms. Let's analyze each statement:

1. PKD autosomal recessive form: This refers to Polycystic Kidney Disease (PKD) that is inherited in an autosomal recessive manner. This form is known as Autosomal Recessive Polycystic Kidney Disease (ARPKD), which typically presents with cysts developing in the kidney and usually manifests just after birth or in early childhood.

2. The urethral opening is on the ventral (inferior) surface of the penis: This condition is known as hypospadias. It is a congenital condition where the urethral opening is located on the underside of the penis rather than at the tip.

3. The kidneys fuse across the midline: This describes a condition known as a horseshoe kidney. In this congenital anomaly, the kidneys are fused together at the lower ends, forming a U-shape, and are located across the midline of the body.

4. Cysts develop in the kidney and usually develop just after birth or in early childhood: This description matches Autosomal Recessive Polycystic Kidney Disease (ARPKD), as mentioned earlier.

5. Cysts develop in the kidney though they develop so slowly they often are not noticed until about 40 years of age: This describes Autosomal Dominant Polycystic Kidney Disease (ADPKD), which is a more common form of PKD and typically presents later in life.

Now, let's match the descriptions with the correct conditions:

• PKD autosomal recessive form: Cysts develop in the kidney and usually develop just after birth or in early childhood (ARPKD).
• The urethral opening is on the ventral (inferior) surface of the penis: Hypospadias.
• The kidneys fuse across the midline: Horseshoe kidney.
• Cysts develop in the kidney though they develop so slowly they often are not noticed until about 40 years of age: Autosomal Dominant Polycystic Kidney Disease (ADPKD).

In summary, the matches are:

• PKD autosomal recessive form: ARPKD (cysts develop just after birth or in early childhood).
• Urethral opening on the ventral surface: Hypospadias.
• Kidneys fuse across the midline: Horseshoe kidney.
• Cysts develop slowly, noticed around age 40: ADPKD.