Hormone Receptor Subtype in Ductal Carcinoma in Situ: Prognostic and Predictive Roles of the Progesterone Receptor.

Background: We investigated the prognostic and predictive roles of the hormone receptor (HRc) subtype in patients with ductal carcinoma in situ (DCIS). We focused on identifying the roles of the progesterone receptor (PR) independent of estrogen receptor (ER) status.

Methods: Nationwide data of 12,508 female patients diagnosed with DCIS with a mean follow-up period of 60.

Adding Ovarian Suppression to Tamoxifen for Premenopausal Breast Cancer: A Randomized Phase III Trial.

Purpose: The addition of ovarian function suppression (OFS) for 5 years to tamoxifen (TAM) for treatment of premenopausal patients with breast cancer after completion of chemotherapy has beneficial effects on disease-free survival (DFS). This study evaluated the efficacy of adding 2 years of OFS to TAM in patients with hormone receptor-positive breast cancer who remain in a premenopausal state or resume ovarian function after chemotherapy.

Patients And Methods: We enrolled 1,483 premenopausal women (age ≤ 45 years) with estrogen receptor-positive breast cancer treated with definitive surgery after completing adjuvant or neoadjuvant chemotherapy.

Parity Differently Affects the Breast Cancer Specific Survival from Ductal Carcinoma In Situ to Invasive Cancer: A Registry-Based Retrospective Study from Korea.

Purpose: Multiparity might increase general mortality for women, but has inconclusive in patients with breast cancer. Here, we aim to discover their effect in terms of the breast cancer development hypothesis: from ductal carcinoma in situ to invasive carcinoma.

Methods: We included 37 947 patients from the web-based breast cancer registration program of the Korean Breast Cancer Society and analyzed survivals using multivariate Cox regression analysis and whether the associations of these factors displayed linear trends.

The role of the addition of ovarian suppression to tamoxifen in young women with hormone-sensitive breast cancer who remain premenopausal or regain menstruation after chemotherapy (ASTRRA): study protocol for a randomized controlled trial and progress.

Background: Ovarian function suppression (OFS) has been shown to be effective as adjuvant endocrine therapy in premenopausal women with hormone receptor-positive breast cancer. However, it is currently unclear if addition of OFS to standard tamoxifen therapy after completion of adjuvant chemotherapy results in a survival benefit. In 2008, the Korean Breast Cancer Society Study Group initiated the ASTRRA randomized phase III trial to evaluate the efficacy of OFS in addition to standard tamoxifen treatment in hormone receptor-positive breast cancer patients who remain or regain premenopausal status after chemotherapy.

Magnetic resonance imaging and clinicopathological factors for the detection of occult nipple involvement in breast cancer patients.

Purpose: Nipple sparing mastectomy provides good cosmetic results and low local recurrence rates for breast cancer patients. However, there is a potential risk of leaving an occult tumor within the nipple, which could lead to cancer relapse and poor prognosis for the patient. The objective of this study was to investigate the occult nipple involvement rate in mastectomy specimens, and to identify preoperative magnetic resonance imaging (MRI) findings and the clinicopathological characteristics of the primary tumor that may correlate with nipple invasion.

Comparison of swallowing disorder following gasless transaxillary endoscopic thyroidectomy versus conventional open thyroidectomy.

Background: In conventional open thyroidectomy, it is necessary to create a sub-platysma muscle flap in front of the strap muscle to provide working space. Adhesion between the flap and the strap muscle can occur after the operation, disrupting strap muscle movement and causing a swallowing disorder. Gasless transaxillary endoscopic thyroidectomy approaches the thyroid through the posterior of the strap muscle and does not require a sub-platysma muscle flap.

The prognostic relevance of psammoma bodies and ultrasonographic intratumoral calcifications in papillary thyroid carcinoma.

Background: Although psammoma bodies (PB) are found in up to 50 % of papillary thyroid carcinomas (PTC), their clinicopathological significance remains uncertain. The aim of the present study was to determine the clinicopathological significance of PB and the correlation between PB and ultrasonographic intratumoral calcification in PTC.

Methods: The clinicopathological parameters, ultrasonographic calcifications, and the presence of PB were evaluated in 258 surgically resected conventional PTC.

Activation of nuclear factor-κB contributes to growth and aggressiveness of papillary thyroid carcinoma.

Nuclear factor-κB (NF-κB) is involved in proliferation, angiogenesis, and metastasis in various malignancies; however, the role of NF-κB in papillary thyroid carcinoma (PTC) has not been fully elucidated. The purpose of this study was to elucidate the role and clinicopathological significance of the NF-κB signaling pathway in PTC. We investigated NF-κB RelA expression in 122 patients with conventional PTC by immunohistochemistry, and evaluated the correlation between RelA expression and clinicopathological parameters, including BRAF(V600E) mutation.