[Resection of S1 root schwannoma with extravertebral retroperitoneal spread via posterior median and laparoscopic approach]. / Odnomomentnoe udalenie nevrinomy pravogo spinnomozgovogo koreshka S1 s ekstravertebral'nym retroperitoneal'nym rasprostraneniem zadnim sredinnym i laparoskopicheskim dostupom (klinicheskoe nablyudenie).

The authors report simultaneous surgical treatment of the right S1 root schwannoma with extravertebral retroperitoneal spread. Well-equipped operating theatre, professional experience and multidisciplinary approach involving neurosurgeons and abdominal surgeons ensure total minimally invasive simultaneous resection of schwannoma via posterior median and laparoscopic approach.

[Neuroendocrine "silent" tumors of the pancreas]. / Neiroéndokrinnye "nefunktsioniruiushchie" opukholi podzheludochnoi zhelezy.

Neuroendocrine tumors are the rare pathology. They are characterized by slow growth and favorable prognosis for life. From 1985 to 2000 fifty-two patients with "silent" neuroendocrine tumors were treated. Clinical symptoms in 60% patients were associated with squeezing of the surrounding organs and tissues (gastroduodenal obstruction or cholestasis), in 20% patients tumors were diagnosed within the framework of syndrome of multiple endocrine metaplasia and in 16% cases tumors were revealed accidentally. Fifty-two percent of the tumors located in the head of the pancreas, 23 and 25% - in the corpus and tail of the pancreas respectively. All the patients underwent surgery. Neuroendocrine nature of the tumors was verified during morphologic study. Five-year survival was 51.8, 41.6 and 54.5% when tumor located in the head, corpus and tail of the pancreas, respectively.