Pancreatic Pancreatic<unk>  or<unk>  of the pancreas (MCN) are a type of mucinous cystic neoplasm of the pancreas. The cure rate is very high in cases on benign cystic lesions, but the case changes if malignant changes ensue. Benign cystadenomas are the most common cystic tumors of the pancreas accounting for 75% of the cases. On an average, mucinous accounts for 40%-50% of cystic tumors, and serous cytadenoma accounts for 30% of it.<unk> s are in the dital pancreas in about 80% of the cases and distal pancreatectomy is needed for resection. In 20% of the cases it is in the head of the pancreas. Earlier it was believed that MCN occurs exclusively in females who are middle aged. However, occasional occurrence in men have been reported, especially those who are 45 years of age or above. Liver A rare neoplasm, 95% cases occur in women, especially at the mean age of 45. Biliary cystadenoma and cystadenocarcinoma constitute less than 5% of intrahepatic cysts originating from the bile duct. Cystadenomas in liver are often confused with hydatid cyst as their appearance on various imaging techniques is nearly same. Treating cystadenomas as hydatid cyst has resulted in recurrence of the cyst. Primary retroperitoneal Cases of primary retroperitoneal<unk>  (PRMC) are extremely rare. However, they are observed more frequently in women, with only 4 cases having been found in men. Even though<unk>  are common ovarian tumor, what makes PRMC so rare is their retroperitoneal location. PRMC and benign<unk>  of the ovary are microscopically similar. Both are multiloculated cystic neoplasms and are lined by a single layer of tall columnar cells with a clear basal nucleus and cytoplasm. Both of them have identical histochemical and ultrastructural features. Flat to low cuboidal cells, resembling mesothelial cells, in the lining interspersed between columnar cells in the same area is the only histological difference between the two tumors.
Mucinous cystadenoma
Mucinous cystadenocarcinoma
Sclerosing polycystic adenosis
Papillary serous cystadenocarcinoma
Serous cystadenocarcinoma
Solid pseudopapillary tumour
Cystadenoma
Angiolipoma