Question

A $76$-year-old woman is brought to the emergency department from a skilled nursing facility due to severe, diffuse abdominal pain that began abruptly $4$ hours ago. She has a medical history of paroxysmal atrial fibrillation, heart failure with preserved ejection fraction, and hypertension. Current medications include metoprolol and lisinopril; she stopped taking apixaban three weeks ago due to financial constraints. On examination, the patient is distressed and diaphoretic. Temperature is $37.4^\circ\text{C}$ ($99.3^\circ\text{F}$), blood pressure is $105/65$ mmHg, pulse is $118$/min and irregularly irregular, and respirations are $22$/min. Abdominal examination reveals mild, diffuse tenderness to deep palpation without rebound or guarding, which appears disproportionately mild compared to her reported pain severity. Laboratory studies show a leukocyte count of $16,500/\text{mm}^3$ and a serum lactate level of $5.2$ mmol/L. A contrast-enhanced CT scan of the abdomen and pelvis is performed. The radiologist notes segmental mural hypoenhancement and wall thinning involving the distal jejunum and proximal ileum. Additionally, there are distinct, linear, branching areas of low attenuation (gas density) extending predominantly into the peripheral subcapsular regions of the liver. Which of the following is the most accurate interpretation of the hepatic imaging findings in the context of this patient's presentation?