The Relationship between the p27 Expression of Papillary Thyroid Cancer Cells Obtained by FNA and Cervical Lymph Node Metastasis / 대한내분비외과학회지

PURPOSE: The p27 gene as a tumor suppressor gene is associated with colorectal cancer, gastric cancer and breast cancer. Some studies have shown a relationship between the underexpression of p27 and lymph node metastasis in papillary thyroid carcinoma. The aim of this study is to evaluate the relationship between a p27 expression of the papillary thyroid cancer cells obtained by fine needle aspiration (FNA) and cervical lymph node metastasis. METHODS: This study included 60 patients with papillary thyroid cancer and who underwent total thyroidectomy or lobectomy. Central lymph node dissection was routinely done. Out of these patients, 30 patients underwent a FNA procedure during the operation. Immunohistochemical staining for p27 antibody was performed on the papillary thyroid cancer tissues and cells. RESULTS: Cervical lymph node metastasis is correlated with the tumor size and lymphovascular invasion (P<0.001). The underexpression of p27 for the papillary thyroid cancer tissues and cells was associated with lymph node metastasis (P=0.009). CONCLUSION: An evaluation of the p27 expression for the papillary thyroid cancer cells obtained by FNA may be useful as a predictor for lymph node metastasis before surgery.

A Case of Leptomeningeal Carcinomatosis Presenting as a Neurological Complication of Stomach Cancer

Leptomeningeal carcinomatosis, an important and serious neurological complication of malignant cancers, is asso- ciated with severe disability and high mortality. It is most commonly seen in patients with breast cancer, lung cancer and malignant melanoma. However, leptomeningeal carcinomatosis induced by gastric cancer has been rarely reported, although gastric cancer is one of the most common causes of cancer-related deaths in Korea. We report a case of a 76- year-old woman with leptomeningeal carcinomatosis presenting as a neurological complication of gastric cancer and con- firmed by cytology examination of the cerebrospinal fluid and brain magnetic resonance imaging with gadolinium enhan-cement.

Comparison of Thinprep (Liquid-Based Cytology) and Conventional Cytology: Abnormal Lesion on Bronchoscopy / 결핵및호흡기질환

BACKGROUND: Liquid-based cytology is currently known as an effective method, and cervical cytology has been shown to be especially effective from of malignancy detection. In our study, the cytological detection rates of the Thinprep (Liquid-based cytology) and conventional cytology (bronchial washing & brushing) for endobronchial lesions were compared. METHODS: Between July 2005 and September 2005, the data from 30 patients with respiration symptom, who had shown abnormal lesion on bronchoscopy, were collected. RESULTS: The bronchoscopic biopsy group was consisted of 30 cytodiagnosis specimens, 24 of which were confirmed to be malignant. The others were tuberculosis (4), bronchiectasis and bronchopulmonary fistula (1 each). Of the 24 malignant case, cancer or atypical cells were detected in 19, 17 and 12 of the Thinprep, brushing cytology and washing cytology cases, respectively. None one of the methods detected cancer cells in the non-malignant specimens. Washing cytology has shown sensitivity, specificity, and positive and negative predictive values of 50, 100, 100 and 33.3% respectively. Brushing cytology has shown sensitivity, specificity, and positive and negative predictive values of 70.8, 100, 100 and 46.2%, respectively. Thinprep has shown sensitivity, specificity, and positive and negative predictive values of 79.2, 100, 100 and 54%, respectively. CONCLUSIONS: Thinprep (liquid-based cytology) showed better sensitivity and negative predictive values for the evaluation of lung cancer than conventional cytology. However a large-scale study will be needed in the future.