AIMS To study the quantitative ultrastucture of neu- roendocrine cells of gastric mucosa on normal anc pathological conditions including the duodenal ulcer (DU) and Zollinger-Ellison syndrome (ZES). METHODS The neuroe...AIMS To study the quantitative ultrastucture of neu- roendocrine cells of gastric mucosa on normal anc pathological conditions including the duodenal ulcer (DU) and Zollinger-Ellison syndrome (ZES). METHODS The neuroendocrine cells of the gastric mucosa of eight normal subjects,six patients with DU and five patients with ZES were quantitatively investi- gated with electro microscope and ultrastructure image analyzer. RESULTS The volume density of neuroendocrine cells in DU was 1.3% and 0.8% (vs 1.6% and 0.9%,P>0.05) in gastric antrum and corpus respectively. In antrum,G cells was of 65% (P< 0.05),D cells decreased in cell density (3% vs 9.5%) and in number of cell per unit area (P<0.01). In corpus,the cell density of ECL cells increased (49% vs 30%,P<0.05);D cells and EC cells decreasec (2% P<0.01 and 4% P<0.05,respectively),and the number of D cell per unit area markedly decreased. In ZES,D cells in corpus decreased in cell density (4% vs 22%,P<0.01) and P cells also decreased (11% vs 24%,P<0.05). The density of ECL cells increased (65% vs 30%,P<0.01). CONCLUSIONS In DU and ZES,both the number and type of NE cells present some changes. Incresed gastrin in DU and ZES patients may be caused by the decrease of D cells and somatostatin secretion.展开更多
Hepatic portal venous gas (HPVG), an ominous radiologic sign, is associated in some cases with a severe underlying abdominal disease requiring urgent operative intervention. HPVG has been reported with increasing freq...Hepatic portal venous gas (HPVG), an ominous radiologic sign, is associated in some cases with a severe underlying abdominal disease requiring urgent operative intervention. HPVG has been reported with increasing frequency in medical literature and usually accompanies severe or lethal conditions. The diagnosis of HPVG is usually made by plain abdominal radiography, sonography, color Doppler flow imaging or computed tomography (CT) scan. Currently, the increased use of CT scan and ultrasound in the inpatient setting allows early and highly sensitive detection of such severe illnesses and also the recognition of an increasing number of benign and non-life threatening causes of HPVG. HPVG is not by itself a surgical indication and the treatment depends mainly on the underlying disease. The prognosis is related to the pathology itself and is not influenced by the presence of HPVG. Based on a review of the literature, we discuss in this paper the pathophysiology, risk factors, radiographic findings, management, and prognosis of pathologies associated with HPVG.展开更多
文摘AIMS To study the quantitative ultrastucture of neu- roendocrine cells of gastric mucosa on normal anc pathological conditions including the duodenal ulcer (DU) and Zollinger-Ellison syndrome (ZES). METHODS The neuroendocrine cells of the gastric mucosa of eight normal subjects,six patients with DU and five patients with ZES were quantitatively investi- gated with electro microscope and ultrastructure image analyzer. RESULTS The volume density of neuroendocrine cells in DU was 1.3% and 0.8% (vs 1.6% and 0.9%,P>0.05) in gastric antrum and corpus respectively. In antrum,G cells was of 65% (P< 0.05),D cells decreased in cell density (3% vs 9.5%) and in number of cell per unit area (P<0.01). In corpus,the cell density of ECL cells increased (49% vs 30%,P<0.05);D cells and EC cells decreasec (2% P<0.01 and 4% P<0.05,respectively),and the number of D cell per unit area markedly decreased. In ZES,D cells in corpus decreased in cell density (4% vs 22%,P<0.01) and P cells also decreased (11% vs 24%,P<0.05). The density of ECL cells increased (65% vs 30%,P<0.01). CONCLUSIONS In DU and ZES,both the number and type of NE cells present some changes. Incresed gastrin in DU and ZES patients may be caused by the decrease of D cells and somatostatin secretion.
文摘Hepatic portal venous gas (HPVG), an ominous radiologic sign, is associated in some cases with a severe underlying abdominal disease requiring urgent operative intervention. HPVG has been reported with increasing frequency in medical literature and usually accompanies severe or lethal conditions. The diagnosis of HPVG is usually made by plain abdominal radiography, sonography, color Doppler flow imaging or computed tomography (CT) scan. Currently, the increased use of CT scan and ultrasound in the inpatient setting allows early and highly sensitive detection of such severe illnesses and also the recognition of an increasing number of benign and non-life threatening causes of HPVG. HPVG is not by itself a surgical indication and the treatment depends mainly on the underlying disease. The prognosis is related to the pathology itself and is not influenced by the presence of HPVG. Based on a review of the literature, we discuss in this paper the pathophysiology, risk factors, radiographic findings, management, and prognosis of pathologies associated with HPVG.
