The infiltration of which type of cells into the epidermis causes the characteristic symptoms of plaque psoriasis?

The patient is 24-hours-postop from a pelvic reconstruction surgery after fracturing the pelvis in a fall. The patient reports severe abdominal pain and nausea. Upon assessment, the patient’s abdomen is grossly distended and firm. The patient’s skin is diaphoretic and the patient is tachypneic and tachycardic. Pulses and capillary refill time are adequate. During the assessment, the patient vomits a moderate amount of light green liquid. The nurse contacts the provider to report suspicion of which postoperative complication?

The nurse is assigned to a patient with chronic alcoholism and alcoholic cirrhosis. Examination of the patient is significant for dilated tortuous veins around his umbilicus and internal hemorrhoids. On the morning of his third day of the current admission, the patient acutely begins to vomit up large amounts of blood. Which describes the pathophysiology that most likely caused this event?