Calcification in and around spleen is easily detectable in plain x ray. Tuberculosis or histoplasmosis or cysticercosis. produce punctate irregular calcification, associated with nodal or heaptic calcification. Coarse irregular calcification is seen in phlebolith, 2-5 mm in size. Larger phleboliths are seen in angiomas and other tumours. diffuse or granular calcification is seen in infarction , especially sickle cell diseae. diffuse granular calcification is also seen in metastasis from ovary or bowel or breast. Tramline or curvilinear calcification is seen in atheroma. A large ring calcification is seen due to splenic artery aneurysm. aneuryms are usually 1,3 cm, second only to aorta, more common in premenopausal women. fine or linear calcification at splenic hilum- splenic thrombosis. Ring calcification over the splenic shadow is usually a large simple cyst of hydatid cyst. Curvilinear calcificaiton around margin of spleen is seen due to subcapsular or perisplenic haemorrhage.Amorphous or puncate calcification is seen in pseudocysts, pst traumatic. Thorotrast produces dense granular shadowing. hesidern deposition produces diffuse increase in density and dense nodules upto 3 mmm.
Patchy areas of calcification in Neiman Pick disease.
Nodular splenic calcification in tuberculosis. Other causes include Histoplasmosis, coccidiodomycosis, brucellosis, hemangiomas and sickle cell anemia
Splenic surface calcification , which is a feature of granulomatous infections.
Curvilinear calcification is seen in the spleen. The common differential diagnosis are Simple cyst, Hydatid cyst or large aneurysm.