The cytologic heterogeneity of the tumor cells in gastric signet ring cell carcinoma was studied with 13 surgically early gastric carcinoma specimens by means of histochemical stainings on mucin(periodic acid Schiff-alcian blue at pH 2.5, paradoxical concanavalin A, high iron diamine) and electron microscopy. Of the 13 cases of early gastric cell carcinomas, 6 were mucosal type and 7 were submucosal type. Eleven cases consisted of mixture of gastric and intestinal type signet ring cells and the remaining 2 of the mucosal type were entirely made of gastric type. The colonic goblet cell type was found in 4 of the submucosal type. Within the mucosa the tumor cells showed a layering phenomenon; type A signet ring cells were distributed at the central zone and type B and C at the superficial or deeper zone. Each type of signet ring cell showed variable mucin histochemical stainability of gastric and/or intestinal nature. Above finding strongly suggest that the variable phenotypes of signet ring cells result from a heterogeneity of cytoplasmic mucin as well as different stages of differentiation of signet ring carcinoma cells.

The double-chambered right ventricle is congenital or acquired cardiac anomaly, which is characterized by aberrent hypertrophied muscular bands that divide the right ventriclar cavity into two different pressure chamber. This anomaly can complicate the natural history of patient with isolated ventricular septal defect. We experienced two cases of cases of acquired DCRV, which confirmed by two separate cardiac catherterization and angiography. The purpose of this report is to show that the aberrant muscular bands may be nonobstructive in early infancy and that the obstructive effect is developed with time as the bands become progressively more hypertrophied.
Angiography ; Heart Septal Defects, Ventricular ; Heart Ventricles* ; Humans ; Natural History

No abstract available.
Echocardiography* ; Echocardiography, Doppler, Color ; Ligation*

No abstract available.
Child ; Humans

No abstract available.
Angiography ; Coronary Angiography* ; Coronary Vessels ; Echocardiography* ; Mucocutaneous Lymph Node Syndrome*

No abstract available.
Child ; Coronary Vessels* ; Echocardiography ; Humans

We report a case of ciliated hepatic foregut cyst which was incidentally found in a 64 year-old man. The cyst, 6 cm in diameter, was unilocular, solitary and was located in the medial segment of left lobe, just below the Glisson's capsule. Microscopically, the cyst wall consisted of 4 layers; pseudostratified ciliated columnar epithelium, subepithelial loose connective tissue, smooth muscle bundles and an outermost fibrous capsule. Although cartilage or subepithelial sero-mucous glands were absent, the morphologic features of the cyst correspond with those of an incomplete form of brochogenic cyst.
Cysts

BACKGROUND: Up to now, sleep stages have traditionally been determined by the visual inspection of individual EEG waves. However, the exact physiological meaning of the sleep waves is not known. The purpose of this study was to try and find out the physiological parameters of the EEG of the sleep and wakefulness states by calculating one of the non-linear chaos parameter, the largest Lyapunov exponent (LLE), of EEG time series. METHODS: The digital EEG of the wakefulness with eye opening (WEO), wakefulness with eye closure (WEC), stage1 (S1), stage2 (S2), stage3 or 4 (S34) were recorded at centroparietal region (C4-P4 bipolar derivation) in 10 normal subjects. Lyapunov exponents of 50 EEG time series in different states were compared. RESULTS: LLE's of WEO, WEC, S1, S2, S34 showed an increas-ing tendency as states switched from wakefulness to sleep. LLE of sleep was larger than that of awake state. CONCLUSIONS: The EEG of the sleep state appeared to be more chaotic than that of the awake state. This nonlinear chaos parameter can be used as a physiological parameter of normal sleep and awake states.
Electroencephalography* ; Sleep Stages ; Wakefulness*

Retroperitoneal fibrosis sometimes causes urological problem involving the ureter, but the mechanism is uncertain. An aortic aneurysm, including an iliac artery aneurysm, is thought to be one of the mechanisms of retroperitoneal fibrosis. However, cases caused by an isolated iliac artery aneurysm are very rare, and symptoms tend to be non-specific; therefore, no definitive treatment has been established. Herein, we report our recent experience of a patient with a left common iliac artery aneurysm involving the ureter, who underwent successful surgical therapy.
Aneurysm* ; Aortic Aneurysm ; Constriction, Pathologic* ; Humans ; Iliac Artery* ; Retroperitoneal Fibrosis* ; Ureter*

We analysed 8 cases of gastrointestinal cytomegalovirus(CMV) infection including one autopsy, three surgically resected and four endoscopic biopsy cases. Involved sites were colon in four,stomach in three and small intestine in one. Three of them were associated with immu-nosuppressed condition but others had no clinical evidence of immune deficiency. Multiple aphthous mucosal ulceration was a common presentation, but one revealed a mucosal ulcer with segmental narrowing and thickening of wall. Microscopically, six showed cytomegalic inclusions in endothelial cells and fibroblasts, one in mucosal epithelial cells and the remaining one in both endothelial cells and mucosal epithelial cells. Immunohistochemical staining using monoclonal antibody against CMV confirmed postive result in seven cases. Serum IgM anti-CMV antibody was elevated in one case. We conclude that gastrointestinal CMV infection is currently not a rare condition and frequently associated with non-immunosuppressed condition, and thus a thorough histologic examination is required especially in the gastrointestinal ulcerative lesion. Once cytomegalic inclusion is suspected, immunohistochemical identification of CMV seems essential for specific diagnosis.
Biopsy