[Gastrointestinal stromal tumor (GIST): a rare case of severe gastric haemorrhage]. / Tumore stromale gastrointestinale: un raro caso di emorragia gastrica severa.

INTRODUCTION: A rare case of gastrointestinal stromal tumor (GIST) provoking a severe gastric bleeding is reported. Case report and results. The Authors report on the case of a 53-year-old male patient who presented with hematemesis, melena and severe acute anemia (Hb: 6 g/dl). EGDS disclosed a protruding lesion centrally ulcerated, of 7 cm in size, localized in the upper half of gastric corpus. Multiple endoscopic biopsies were negative for neoplastic changes. Because of further gastric bleeding, a total gastrectomy with "Roux-en-Y" reconstruction was performed in urgency GIST of smooth muscle was diagnosed by histological and immunohistochemical postoperative examination. DISCUSSION: Gist are neoplasms arising from connective tissue elements of gastrointestinal wall, which represent about 2% of GI-tract malignant tumor. Tumor size of 5 cm or greater, elevated mitotic count, lack of histological differentiation are significantly associated with a shorter recurrence-free survival. GIST-s are rarely cause of an inarrestable gastric bleeding. For gastroenterological surgeons it is critical to select the most suitable surgical procedure. In our case, 9 months after gastrectomy the patient is well, in spite the severe clinical background and the malignancy degree. CONCLUSION: The GIST-s have to be taken into account in the differential diagnosis of GI-tract tumors if endoscopic biopsies are negative for malignancy. In our opinion, total or partial gastrectomy fro gastric should be preferred. Moreover, a close follow up is recommended.

[Retroperitoneal tumors: personal experience]. / I tumori retroperitoneali: esperienza personale.

The Authors experience in five retroperitoneal tumors with symptoms and histopathological characteristics not different from those described in the Literature, is here reported. Topographic findings, classification, and incidence of retroperitoneal tumors as referred by various Authors are discussed. Two aspects are particularly pointed out: the histological type and the surgical strategy for their removal. Concerning the first aspect, the Authors underline that benign lesion may have an optimal outcome and a long survival, unlike the malignant ones, which have always unfavourable prognosis, despite adjuvant and complementary therapy (radiotherapy, chemotherapy). As for the second aspect, surgery is the treatment of choice even when other organs different from those exclusively retroperitoneal, may be involved in the demolition.