Final answer:
The most common complication associated with a transverse colostomy is a parastomal hernia, although bowel obstruction, colostomy prolapse, and stoma necrosis can also occur.
Step-by-step explanation:
The most commonly associated complication with a transverse colostomy is a parastomal hernia, which occurs when the intestine protrudes through the abdominal muscles around the stoma, resulting in a bulge. Complications like bowel obstruction, colostomy prolapse, and stoma necrosis may also occur but are not as common as a parastomal hernia. These complications require careful management to prevent worsening of the condition and additional health issues. In the case of a parastomal hernia, surgical repair may be necessary if the hernia becomes problematic.