Experiences of Endoscopic Ultrasonography in the 5 cases with Pancreatic Insulinoma / 대한소화기내시경학회지

Of the various endocrine tumors affecting the pancreas, insulinomas and gastrinomas are the most common. In order to facilitate surgery, the localization of tumor is important. However, at the first time of presentation, the localization of tumor was often difficult by CT or ultrasonography because the tumor was relatively too small. The introduction of endoscopic ultrasonography has allowed high-resolution imaging of the pancreas that distinguishes structures as small as 2 to 3 mm in diameter. Thus, it has became easier to detect the lesion site of pancreatic endocrine tumor by endoscopic ultrasonography. We report the 5 patients who had pancreatic insulinoma which were detected and localized by endoscopic ultrasonography.

Experiences of Endoscopic Ultrasonography in the 5 cases with Pancreatic Insulinoma / 대한소화기내시경학회지

Of the various endocrine tumors affecting the pancreas, insulinomas and gastrinomas are the most common. In order to facilitate surgery, the localization of tumor is important. However, at the first time of presentation, the localization of tumor was often difficult by CT or ultrasonography because the tumor was relatively too small. The introduction of endoscopic ultrasonography has allowed high-resolution imaging of the pancreas that distinguishes structures as small as 2 to 3 mm in diameter. Thus, it has became easier to detect the lesion site of pancreatic endocrine tumor by endoscopic ultrasonography. We report the 5 patients who had pancreatic insulinoma which were detected and localized by endoscopic ultrasonography.

A Case of Suprasellar Arachnoid Cyst

Suprasellar cistern is uncommon location where the arachnoid cysts involve and only sporadic case reports are seen in the world literature. A case of suprasellar arachnoid cyst is reported, which mimicked such clinically common perisellar lesions as pituitary adenoma, empty sellar syndrome, dermoid cysts, etc., and could be differentiated from them preoperatively with C.T. scan and pneumoencephalography.

A Case of 'Primitive Glioma'

A case of 'primative glioma' which involved left parietal and occipital lobes of a child is reported with detailed views on the clinical and pathologic findings.

A Case of Angiofollicular Lymph Node Hyperplasia in the Thoracic Spinal Canal

Angiofollicular lymph node hyperplasia is a relatively rare benign lesion. In 1954 Casteman described the first case of this process occurring in the anterior mediastinum. This lesion was subsequently described in a number of case reports under various names including Castleman's disease, lymph nodal hamartoma, follicular lympho-reticuloma, angiofollicular lymph-node hyperplasia, angiomatous lymphoid hamartoma, and benign giant lymphoma. Although the mediastinum is the most common location, they also occur in other areas of the body, usually where lymph nodes are normally found. However, intraspinal location has been seldom described in literatures. Recently, authors experienced a case of angiofollicular lymph node hyperplasia in the thoracic spinal canal, which was operated upon for paraparesis below T10, in a 17 year old male. The tumor was located between the levels of T8 to T10, and was encircling the subjacent spinal cord. This lesion was successfully removed. The patient is in good condition postoperatively. A brief review of pertinent literatures was made.

A Case of Aneurysmal Temporal Bone Cyst

A case of huge aneurysmal bone cyst involving left temporal bone is reported. Radiologic, operative, and histopathologic findings are described in details.

Primary Choroid Plexus Papilloma of the Cerebellopontine Angle with Spinal Leptomeningeal Seeding

A case of primary choroid plexus papilloma of the cerebellopontine angle with spinal leptomengeal seeding is reported, and the literature pertinent to this subject reviewed. CT scan revealed a well-demarcated elliptical homogeneousely high density lesion with definite contrast enhancement within right cerebellopontine angle, which could hardly be differentiated from that of acoustic neurinoma.

Microsurgical Treatment of Hemifacial Spasm

Nine patients, 3 men and 6 women, ages 39 to 61, were operated on between May 1978 and August 1978 for classical hemifacial spasm. The operation consisted of a small retromastoid craniectomy performed through a short vertical incision with microsurgical exploration of the cerebello pontine angle and vascular decompression of the facial nerve root exit zone. Decompression was maintained by interposing a small piece of muscle between the artery and the brain stem. Five patient have had complete relief of the hemifacial spasm. Three patients have had partial relief of the hemifacial spasm. One patient have had no relief of the hemifacial spasm.