Liver abscess is a relatively rare focal lesion of the liver, which is characterized by the accumulation of local suppurative tissue and the disintegration of parenchyma and interstitium. Abscesses may be the result of complications of cholelithiasis, and in most cases, abscesses are located in the right lobe of the liver and are large in size. Typical symptoms of biliary abscess are small and multifocal. The visual image of a liver abscess is not always specific; at the same time the clinical symptomatology allows suspicion of this exact pathology.

On an NLS examination, the therapist may detect a thick, dark pigmented membrane and heterogeneous tumor interior contents. Diagnostic accuracy can be achieved with CT use in the visualization of peculiar forms and heterogeneity of internal structures.

NLS examination with the Biophilia Tracker detected moderate chromogenicity in the focal center (3-4 points according to the Fleidler scale) as the abscess formed.

At the same time, we detected a gradual (crater-like) density heterogeneity from the peripheral region to the center. The confirmed lesion is not strictly distinguished from the surrounding parenchyma. Inhomogeneous lobulation is seen, and air bubbles appear as hypopigmented spots within the abscess cavity. The last argument is the hyperspectral similarity (D<0.425) to the etalon «Liver Abscess». According to some authors, the diagnostic reliability of NLS in the case of abscess is close to an absolute value.

Hepatic adenomas are associated with benign tumors that arise from hepatic cells. Might find it in memory associated with taking oral contraceptives. This pathology is more common in young women. It may sometimes be diagnosed in men who use androgen or steroid drugs. Adenoma diagnosis is important due to the high risk of bleeding, rupture, malignant transformation, or need for surgical intervention.

The histological heterogeneity of adenomas (hemorrhage, necrosis, fatty infiltration, central scarring, encapsulation, and development of large vessels within the tumor) results in heterogeneous visual images of NLS and MRI and CT; this hallmark is this Pathology's unique trademark. In 30% of cases, the adenoma becomes encapsulated, similar to the formation of a pseudocapsule. Adenomas range in size from 1 to 19 cm (mean 5.4 cm). Adenomas can be solitary or multiple. It has distinct contours. Unlike hemangiomas, adenomas do not lie close to hepatic vessels and do not occupy entire lobes. Malignancies were more heterogeneous and poorly delineated.

Hepatic adenoma may be evident when NLS examination reveals a round tumor with a well-defined outline, moderately dark pigmented (4-5 points) internal structures, intratumoral vessels, and surrounded by a lightly pigmented ring. As usual, the most important issue in diagnosis is the hyperspectral similarity to the Hepatic Adenoma etalon.

MRI signs of adenomas are: well-defined heterogeneous tumor surrounded by a ring, more often hyperintense and sometimes hypointense hemorrhage in the center with corresponding central scarring, arterial phase The contrast is uneven.

The above features (heterogeneity of structure, pseudocapsule, hyperintensity on MRI images) again underscore the difficulty of adenoma differentiation, especially from hepatocellular carcinoma.

If there are signs of adenoma, a Biophilia Tracker test or liver MRI may be used.