Objective To improve the understanding of small cell carcinoma of the urinary bladder. Methods The pathological and clinical data of 6 small cell carcinoma cases (4 men and 6 women, mean age of 51 years) were analyzed.Of them 2 cases had components of transitional cell carcinoma or adenocarcinoma.Two cases underwent partial cystectomy,and 4 cases,cystectomy.After operation,5 of them underwent 2～6 courses of chemotherapy. Results All the 6 cases were followed-up for 12～60 months,and they all died of tumor relapse.Their average survival time was 28 months. Conclusions Small cell carcinoma of urinary bladder accounts for 0.44% of the primary malignant tumor of urinary bladder.It has high malignancy and easily metastasizes to lymph nodes,liver and bones,thus the prognosis is bad.Radical cystectomy in combination with systemic chemotherapy has better efficacy.

OBJECTIVE: To study the expression of CD44 and nm23-H1 gene proteins and their clinical significance in laryngeal carcinoma. METHOD: The expression of CD44 and nm23-H1 proteins were detected by immunohistochemistry method in 40 cases with laryngeal carcinoma, 20 adjacent carcinoma tissues and 12 cases normal laryngeal mucosa tissues. RESULT: The expression of CD44 and nm23-H1 proteins in laryngeal carcinoma were much higher than that in normal laryngeal mucosa. The expression of CD44 protein in laryngeal carcinoma with metastatic lymph node was higher than that in laryngeal carcinoma without metastatic lymph node, but nm23-H1 protein lower. The expression of CD44 protein was positively correlated with the metastasis, clinical staging and pathological classification but not correlated with T classification of laryngeal carcinoma. The expression of nm23-H1 protein was negative correlation with the metastasis and clinical staging of laryngeal carcinoma. CONCLUSION CD44 and nm23-H1 gene proteins play an important coordinated regulation role in the carcinogenesis, development and metastasis of laryngeal carcinoma and will probably become the key biological marks in the judging and evaluating prognosis of laryngeal carcinoma.
Adult ; Aged ; Carcinoma, Squamous Cell ; metabolism ; pathology ; Female ; Humans ; Hyaluronan Receptors ; metabolism ; Laryngeal Neoplasms ; metabolism ; pathology ; Lymphatic Metastasis ; Male ; Middle Aged ; NM23 Nucleoside Diphosphate Kinases ; metabolism ; Neoplasm Staging