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Biomedical subjects

S T Chou

Publications and source records attributed to S T Chou.

At least 55 records · Page 3Linked to original sources
PubMed1985

Primary malignant fibrous histiocytoma of the uterus--ultrastructural and immunocytochemical studies of two cases.

The clinical and pathological features, including ultrastructural and immunocytochemical findings, of 2 cases of primary malignant fibrous histiocytoma of the uterus are reported. One patient had pulmonary metastases at the time of hysterectomy: she developed pelvic recurrence and died 3 mth after operation. The other patient was well and apparently free of disease 6 mth after hysterectomy. Histologically both tumours resembled pleomorphic leiomyosarcoma, and the diagnosis of a malignant fibrous histiocytoma was confirmed only after electron microscopic and immunocytochemical studies. Hormone receptor assay for estrogen and progesterone was positive in both tumours. Anti-estrogen treatment was started in one case but was ineffective.

Aged↗
PubMed1983

Primary lymphoma of the heart. A case report.

The necropsy findings of a large cell lymphoma involving only the pericardium and myocardium in a 62-year-old woman are reported. The initial presenting symptoms were heart failure followed by rapidly progressive heart block. The diagnosis of cardiac lymphoma was suggested by gallium and blood pool isotope studies, and was subsequently confirmed by operative myocardial biopsy. The clinical course was abrupt, and the patient died before therapy was instituted. While primary cardiac lymphoma is an extremely rare condition, experience in this case suggests that noninvasive isotope studies, particularly gallium and blood pool, are helpful in the diagnosis of atypical cardiomyopathy.

Diphosphates↗
PubMed1983

Diagnostic accuracy of flexible endoscopic biopsy in carcinoma of the oesophagus and cardia.

The endoscopic diagnoses of 51 patients with carcinoma of the oesophagus and cardia were studied. Tissue for histology and cytology was obtained through either the flexible (28) or rigid (23) endoscope and the results compared. Squamous cell carcinoma was diagnosed accurately (100%) by either method. Adenocarcinoma was poorly diagnosed by flexible endoscopy (five out of 13 with one false positive) while rigid endoscopy remained accurate (six out of six). Misdiagnosis with the flexible endoscope has been shown to occur in the presence of inflammation of the mucosa or tumour infiltration of the submucosa of the lower oesophagus. This has been attributed to the inadequacy of the specimen size for accurate diagnosis in these circumstances.

Aged↗
PubMed1981

Lectin-binding affinities of human epidermal tumors and related conditions.

Paraffin-embedded sections from a variety of epidermal lesions were stained with fluorescein isothiocyanate-labeled concanavalin A and examined by a fluorescence microscope. Seventy-six normal, hyperplastic, and neoplastic tissues were examined. Lectin binding was demonstrated in all malignant tumors, the fluorescence being confined to the plasma membrane of the tumor cells. Normal and hyperplastic tissues either failed to stain or showed a grossly diminished level of fluorescence. The distinction between malignant and normal of hyperplastic cells was clear-cut and definite.

Bowen's Disease↗
PubMed1980

Multiple primary cancers arising from different organs and tissues.

The simultaneous development of a lymphoma and an adenocarcinoma of the stomach in a patient is reported. This occurrence is exceedingly rare. Moreover, the presence of a third neoplasm in the axillary lymph nodes, manifested as secondaries from a squamous cell carcinoma, makes this case unique in the literature. The concept and postulated causes of multiple malignant tumours are discussed.

Adenocarcinoma↗
PubMed1980

Recurrent pyogenic cholangitis: a necropsy study.

Forty-six necropsy cases of recurrent pyogenic cholangitis (RPC) among Chinese in Hong Kong were reviewed. Intrahepatic biliary pigment stones or bile sludge were present in all cases and liver abscesses were common (80%). Histologically the early lesion was marked by acute inflammation in portal tracts with frequent pylethrombophlebitis and the advanced chronic lesion by periductal fibrosis. Most patients died from chronic persistent hepatic suppuration or disseminated infection. The pathogenesis is not fully understood; the present study favours the view that a protein-deficient diet initiates intrahepatic stone or sludge formation with biliary obstruction; subsequent bacterial infection probably originates from the portal system.

Adult↗
PubMed1978

The longevity of Clonorchis sinensis.

The persistence of Clonorchis sinensis infestation of the bile duct for a period of at least 26 years without neoplasia supervening is reported in a Chinese immigrant to Australia.

Aged↗
PubMed1976

Mucin histochemistry of human cholangiocarcinoma.

Histochemical studies of mucins were carried out on 17 autopsy specimens of cholangiocarcinomas associated with clonorchiasis. All tumours produced epithelial mucins which were mixtures of neutral and acid mucopolysaccharides without any histochemically demonstrable components of sialic and uronic acids. The mucins were qualitatively similar to that secreted by normal and Clonorchis-infested bile ducts. However carboxymucins were reduced and sulphomucins were absent or present only in trace amounts in the neoplastic epithelium; in the hyperplastic epithelium in clonorchiasis sulphomucins were abundant. The HID-AB technique for sulphomucins is valuable in differentiating hyperplastic bile ducts and cholangiocarcinoma.

Adenocarcinoma↗
PubMed1976

Mucin-producing cholangiocarcinoma: an autopsy study in Hong Kong.

Fifty autopsy cases (35 male and 15 female) of mucin-secreting cholangiocarcinoma in Chinese were reviewed. The peak incidence was in the 7th decade for males and in the 6th for females. Massive (37), multinodular (8), diffuse (1) and hilar (4) types were recognized grossly. The hilar tumours arose from the main intrahepatic ducts and the other types originated from smaller ducts. The overall association with stones was 20% and clonorchiasis 92%. Cirrhosis occurred in only 4% of cases. There was an association between the degree of mucin secretion and the presence and severity of clonorchiasis.

Adenoma, Bile Duct↗