Spongy appearance with central sunburst calcification is seen in –
"The serous cystadenoma, or microcystic adenoma, is a benign tumor of elderly women, presenting with vague abdominal symptoms. A large calcified mass is often seen, with the calcification having a characteristic sunburst pattern within a central fibrotic scar".
Pancreatic adenocarcinoma
Mutinous cyst adenocarcinomas
Somatostatinoma
Serous cystadenoma