Pancreatitis: Elevated amylase levels (22L) are a strong indicator of pancreatitis, which can cause left upper quadrant pain. The history of ulcerative colitis may also increase the risk of pancreatitis due to potential medications used to treat ulcerative colitis or the disease itself.

Gastroesophageal Reflux Disease (GERD): Can cause left upper quadrant pain and is common in the general population. Elevated liver enzymes could be related to medication use or other factors.
Peptic Ulcer Disease: Given the history of ulcerative colitis, the patient may be at increased risk for peptic ulcer disease, which can cause left upper quadrant pain.
Hepatitis: Elevated liver enzymes suggest liver inflammation, which could be due to hepatitis. The normal CBC and CMP make viral hepatitis less likely, but it's still a consideration.

Splenic Infarction or Rupture: Although less likely, these conditions can be life-threatening and require immediate attention. The patient's left upper quadrant pain and elevated liver enzymes could be indicative of a splenic issue.
Mesenteric Ischemia: This is a rare but potentially deadly condition that can cause abdominal pain. The patient's history of ulcerative colitis may increase the risk of vascular complications.

Splenomegaly due to Portal Hypertension: This could be related to the patient's history of ulcerative colitis, which increases the risk of primary sclerosing cholangitis and subsequent portal hypertension.
Left Upper Quadrant Mass or Tumor: Although unlikely, a mass or tumor in the left upper quadrant could cause pain and elevated liver enzymes. Further imaging would be necessary to evaluate this possibility.