Background/Objective: It is important to keep the spleen with the help of imaging in today world. We can see variations like asplenia, polysplenia (2 -16 pieces) at MRI. Normal spleen has a size up to 1cm and less than that is asplenia or atrophy of spleen. It is common to see large vessels anomalies. We can evaluate it after spleen surgical removal, also spleno-sis, and accessory spleen. The aim of this presentation is to report variations of spleen site on CT. Patients and Methods: All the 3000 cases had sono-graphy report or CT. Some of them had MRI report. All the patients received oral or intravenous contrast media. Results: Among 3000 CT, there were 240 cases of ac-cessory spleen, two cases of poly spleen, one case of pelvic spleen, 90 cases of spleen metastasis which were mostly lymphoma, 25 cases of Hydatid cyst, three cases of simple cysts, three cases of small spleen (1-6 cm), two cases of huge splenomegaly, 14 cases of spleen calcifications, 15 cases of accessory spleen which in one case it was more than 3.5cm. There were five cases with spleen measured 8 -12 cm in di-ameter which were after splenectomy due to Thalas-semia major and it was as a result of enlargement of accessory spleen which was not diagnosed, also two cases of multi- accessory spleen were found. Other complications of spleen were five cases of abscess and infections, 12 cases of spleen infarction, 36 cases of spleen rupture, two cases of cavernous hemangioma and one case of capillary hemangioma. Conclusion:1-Sonography had better accuracy in the case of internal texture, tumors and cysts in compari-son with CT. 2-CT had better accuracy than sonogra-phy at calcification, an splenic surroundings, spleen infarction and splenic vessels investigation. 3-CT is mandatory for major thalassemia and the ones who must go under splenectomy. Also CT is necessary for revealing accessory spleen which may be missed at sonography. 4- For finding pelvic spleen CT, CTA and MRI are possible but sonography and doppler are difficult. 5-RN Scan has the minimum role at spleen imaging.

Wandering spleen, defined as a spleen without its usual peritoneal attachments, is a rare entity. We report a 34-year-old woman with acute abdomen due to torsion of the long vascular pedicle of a wandering spleen, displaced in the abdominal cavity, and infarction of the spleen. Wandering spleen was diagnosed by ultrasound and computed tomography (CT) scan, and was managed by splenectomy in this patient. Wandering spleen usually occurs in 20 to 40 years old women. The most common presentation is acute abdominal pain, although signs and symptoms vary widely. Due to the risk of splenic infarction, rapid and accurate diagnosis is essential. A confirmatory diagnosis of a wandering spleen depends heavily upon imaging studies such as abdominal ultrasound, abdominal and pelvic CT scanning, nuclear scintigraphy or a liver-spleen scan. Treatment options include splenopexy or splenectomy.

Littoral- cell angioma (LCA) is a rare vascular tumor of the spleen. It was thought to be a benign, incidental lesion. However, many recent reports have described it to be a malignant lesion with congenital and immunologic associations. We report a case of LCA of the spleen, which has been infrequently communicated in the literature. A 41-year-old female patient was admitted to our hospital with a three-week history of weakness, weight loss, anorexia, and intermittent upper abdominal pain which improved slightly with antacid medication. Imaging studies, including computed tomography (CT) and magnetic resonance imaging (MRI), showed multiple lesions in the spleen. Laparoscopic splenectomy was performed.

Wandering spleen is a condition in which the spleen migrates to another position in the abdomen different from its normal location. In this study, we present two different cases of wandering spleen admitted in Loghman Hakim government hospital in Tehran, Iran. The cases included a 5-year-old girl with wandering spleen and complication of torsion and infarction of spleen and a 24-year-old man with wandering spleen and intestinal malrotation. The three entities, wandering spleen, gastric volvulus, and intestinal malrotation are not common and can occur independently, but share a common etiology as congenital anomalous intraperitoneal visceral attachment originated from the dorsal mesentery. Wandering spleen may cause abdominal pain and then become complicated by torsion and infarct.

An invasive mole is a rare form of gestational trophoblastic disease in which the molar tissue invades into the deep myometrium, cervical stroma, blood vessels or extrauterine sites. This report is of an invasive mole of spleen that has originated from an ectopic pregnancy, which was primarily though to be a choriocarcinoma.