Hepatosplenomegaly is a significant pathological sign. Under normal circumstances, the spleen is not palpable. If the spleen margin can be felt in the supine or lateral position, it indicates splenomegaly. Clinical Manifestations of Hepatosplenomegaly In clinical practice, hepatosplenomegaly caused by various factors presents with varying degrees of severity, often primarily affecting either the liver or spleen.Some conditions present clinically with isolated hepatomegaly or splenomegaly. For instance, glycogen storage disease manifests as hepatomegaly, while splenic vein thrombosis presents solely as splenomegaly.Ultrasound also provides etiological information. B-mode ultrasound is highly useful for differentiating intrahepatic masses like liver cysts, abscesses, and tumors. It can distinguish between cirrhosis, fatty liver, and congestive liver on ultrasound images. Gallbladder ultrasound can detect the presence of common bile duct cysts.Ultrasound can assess the spleen's position, shape, and size with minimal interference from factors like abdominal muscle tension. It is more sensitive and accurate than palpation for detecting splenomegaly and can display internal structures, distinguishing between hemorrhagic splenomegaly, lymphogranuloma, primary splenic tumors, and subcapsular hematomas.
2. Radionuclide Imaging: Radionuclide studies may also aid in diagnosing hepatosplenomegaly. Colloidal 99mTc is used to assess the liver's position, shape, size, and detect any intrahepatic masses.The spleen may appear simultaneously with the liver. When spleen function is normal, the spleen shadow is less dense than the right hepatic lobe. In cases of splenomegaly, the spleen shadow may be denser than the liver shadow. This technique is also useful for diagnosing intrasplenic masses and infiltrative lesions.Treatment Methods for Hepatosplenomegaly
The spleen is a blood-storing organ composed of white pulp and red pulp. The white pulp consists of dense lymphoid tissue, serving as the primary site for T-cell distribution and performing immune functions. The red pulp comprises sinusoids and cords, housing numerous macrophages, B-lymphocytes, and plasma cells, which filter blood and eliminate foreign substances.Blood cells primarily enter the sinusoids through tiny pores in the basement membrane between the splenic cords and sinusoids, eventually reaching the splenic veins.These pores measure only 2-3 μm in diameter, while red and white blood cells have diameters of 7-12 μm. Consequently, blood cells must undergo extreme deformation to pass through. In cirrhotic patients, blood cells exhibit poor deformability, often failing to traverse the pores. They become chronically trapped within the splenic cords and are subsequently destroyed by macrophages.During portal hypertension in cirrhosis, massive blood cell retention in the enlarged spleen leads to destruction by macrophages, resulting in splenomegaly manifestations including leukopenia, anemia, and thrombocytopenia.Surgical resection is the traditional approach, offering good efficacy. However, post-surgery loss of the spleen's blood storage and immune functions makes infections difficult to control. Splenic artery embolization preserves both blood storage and immune functions while resolving splenomegaly. This technique achieves therapeutic effects by partially embolizing splenic arteries, causing ischemia and necrosis in the embolized spleen tissue.