Identifying other abnormalities or defects is the main priority in confirming the diagnosis and treatment of cloaca deformities and malformations. These abnormalities typically involve the urinary system, the gynecologic organs, such as the vagina and uterus, and the lower back and spinal column.
Urinary System and Gynecologic Organs
About half of patients with cloacas also have a defect affecting their urinary and gynecologic organs. Some children may have only one kidney, or they have urine that backs up into the kidneys (vesicoureteral reflux) or enlargement of the kidney drainage system (hydronephrosis).
Another potential problem is hydrocolpos. This is a condition where fluid collects within the vagina and uterus that may press on the base of the bladder neck, causing a blockage of the ureters, which does not allow them to drain into the bladder.
About half of girls with cloaca will have problems with gynecologic organs that may affect these organs’ functions later in life, including the ability to give birth.
Spinal and Sacral Defects
The sacrum, or small bones found in the lower back, can often be affected. Sometimes one or more of the bones may be missing. More often though, the sacrum may be smaller and not formed correctly. In some cases, the spinal cord may be incorrectly positioned within the bones of the spinal column, and this condition, called tethered cord, may need repair.
More on Treatment Types
While the initial surgical goal is to stabilize the child and relieve blockages in the urinary and intestinal tract, the long-range goals are directed at restoring anatomy and function.
Diagnostic tests of the cloaca help determine the length of the common channel as well as other important aspects that determine the best way to correct the malformation.
Patients usually fall into one of two groups, with each requiring a different treatment approach. The first group involves girls that are born with a common channel shorter than 3 centimeters, or smaller than one inch. For most of these patients, the cloaca can be repaired without the need for an incision through the abdominal (stomach) area.
The second group includes patients with longer common channels. These patients usually need a laparotomy, or incision through the abdominal area. Decisions must also be made about urinary and vaginal reconstruction or replacement. These types of corrective surgery are best handled in centers with a team that specializes in the repair of these defects, and have collaboration between pediatric colorectal surgery, urology and gynecology departments.