• Journal of Korean Neurosurgical Society
• /
• v.29 no.5
• /
• pp.609-614
• /
• 2000

Objective : A retrograde clinical study was undertaken to determine the effect of opening lamina terminalis on the development of hydrocephalus after aneurysmal subarachnoid hemorrhage(SAH). We compared the incidence ratios of the development of hydrocephalus with and without opening lamina terminalis during operation after aneurysmal SAH. Patients and Methods : From Oct. 1996 to Sep. 1998, we performed 138 aneurysm surgery for 122 patients. In 98 cases, the lamina terminalis was opened to make direct cerebrospinal fluid flow from the third ventricle to subarachnoid space for prevention of delayed hydrocephalus. We compared the incidence of hydrocephalus after opening lamina terminalis to those without opened lamina terminalis. Results : In 95 cases, the hydrocephalus was noticed in 2 cases(2.2%). It is significantly lower in the group with opening lamina terminalis than the group without opening lamina terminalis(about 10%). Conclusion : It is simple and easy procedure to open the lamina terminalis during aneurysm surgery. With this maneuver, we could reduce the incidence of hydrocephalus after aneurysmal spontaneous SAH. Thus, it is considered that the opening lamina terminalis is one of the effective methods for preventing the development of hydrocephalus after aneurysmal spontaneous SAH.

• Journal of Korean Neurosurgical Society
• /
• v.55 no.6
• /
• pp.357-361
• /
• 2014

Computed tomography angiography (CTA) is commonly used in setting of subarachnoid hemorrhage, but imaging features of aneurysm rupturing taking place at the time of scanning has rarely been described. The author reports a case of actively rebleeding aneurysm of the anterior communicating artery with intraventricular extravasation on the hyperacute CTA imaging. The rebleeding route, not into the third ventricle but into the lateral ventricles, can be visualized by real-time three-dimensional CT pictures. The hemorrhage broke the septum pellucidum and the lamina rostralis rather than the lamina terminalis.

• Development and Reproduction
• /
• v.8 no.1
• /
• pp.43-47
• /
• 2004

The present paper studied neurosecretory cell types and their seasonal secretory activity in the eyestalk of Palaemon macrodactylus. The samples were monthly collected in Nakdong estuary for one year. The eyestalk consisted of lamina ganglionaris, medulla externa medulla interna, and medulla terminaris. four types of neurosecretory, A-, B-, C- and D-cells are found in the eyestalk. The A-cells are located in the medulla externs. Althoush the B- and C-cells are located in the medulla interna and medulla terminalis, B-cells are predominant in medulla interna and C-cells are usually distributed in medulla terminaris. The size of D-cells are larger than other types of cells in size. The neurosecretory cells except D-cells show a remarkable change with month. The A-, B-, and C-cells are activated from March and April to July, and decreased at August.