Small patchy arterial phase enhancement foci in the left lobe of the liver are usually seen in inflammation, hemangioma, tumor, etc. The specific diagnosis needs to be determined under the guidance of the doctor based on the patient’s medical history, clinical manifestations, and other examinations. Arterial enhancement foci are usually the term used in CT scanning, that is to say, local lesions are enhanced in arterial scanning when doing enhanced CT, which is usually seen in inflammation, hemangioma, tumor, etc., because arterial enhancement foci usually suggests that the blood supply of the blood vessels is better, so the lesions will be enhanced during the arterial period. However, the specific condition needs to be judged according to the different degrees of enhancement, whether the margins around the lesion are clear, and whether there are other auxiliary features, and it also needs to be diagnosed according to the patient’s medical history, clinical manifestations, and other examinations under the guidance of the doctor. If small arterial enhancement foci are detected in the left lobe of the liver, the patient should further improve the relevant examinations under the guidance of the doctor to clarify the diagnosis and treatment.