Pancreaticoduodenal artery pseudoaneurysm caused by segmental arterial mediolysis: a case report of surgical treatment.

A 64-year-old woman underwent surgical resection of a posterior inferior pancreaticoduodenal arterial aneurysm in the subacute phase of acute aortic dissection (AAD). Concomitantly, a distal pancreatectomy was also required. The aneurysm was approximately 20 mm in diameter.

[Arch aneurysm and ruptured innominate artery aneurysm with acute occlusion of trachea].

We reported on a case of 80-year-old woman who suffered from severe acute respiratory failure. A chest computed tomography (CT) revealed arch aneurysm and innominate artery pseudoaneurysm, which severely compressed main bronchus and trachea. After tracheal intubation in the emergency room, respiratory status improved rapidly.

Case of isolated thoracic aortic aneurysm as a manifestation of undiscovered giant cell arteritis.

A 73-year-old woman was referred to our hospital to investigate dilatation of an aortic arch which had been detected by a chest roentgenogram and severe aortic valve regurgitation detected by echocardiography. On admission, a computed tomography scan of the chest showed a large fusiform ascending aortic aneurysm. She had not shown any symptoms such as headache or polymyalgia rheumatica and had no significant coronary atherosclerosis.

Mucinous cystic tumor of the pancreas: immunohistochemical assessment of "ovarian-type stroma".

The new histopathological classification of exocrine pancreatic tumors by the World Health Organization, now includes "ovarian-type stroma" ("OS") in the definition of mucinous cystic tumor of the pancreas (MCT-P). This study investigated the clinicopathological findings of the MCT-P according to WHO classification and scrutinize the function of "OS" in MCT-P immunohistochemically. Thirty-four cases of MCT-P (28 adenomas, 2 borderline tumors and 4 adenocarcinomas) were examined clinicopathologically.

Secondary extramedullary plasmacytoma involving the pancreas.

Extramedullary plasmacytoma is a rare variant of plasma cell tumor involving organs outside the bone marrow. The vast majority of extramedullary plasmacytomas present as a secondary tumor of systemic myelomatosis of the bone marrow. We experienced a patient with extramedullary plasmacytomas of the head and tail of the pancreas presenting as secondary masses from extramedullary plasmacytoma of the maxillary sinus that had been treated 5 years previously.