Publications by authors named "Se-Hyun Paek"

Background/aim: Our most recent study revealed that the responsiveness of hormone receptor-positive breast cancer (HR+ BC) cells to estrogen or endocrine therapy can be altered by certain cell culture or ambient environmental conditions. Nevertheless, we were unable to investigate the relevant molecular mechanism and clinical relevance. Therefore, this study was planned as a follow-up.

View Article and Find Full Text PDF

Hormone receptor-positive breast cancer (HR+ BC) cells depend on estrogen and its receptor, ER. Due to this dependence, endocrine therapy (ET) such as aromatase inhibitor (AI) treatment is now possible. However, ET resistance (ET-R) occurs frequently and is a priority in HR+ BC research.

View Article and Find Full Text PDF

Background: We aimed to investigate the potential advantages of bilateral axillo-breast approach (BABA) robotic thyroidectomy over conventional open surgery and to determine whether it is a safe and complete surgical procedure compared with open surgery in patients with papillary thyroid cancer.

Patients And Methods: We retrospectively reviewed the records of 315 consecutive patients (robotic, n=54; open, n=261) who underwent total thyroidectomy and central neck dissection for papillary thyroid cancer from March 2013 to June 2014. Postoperative complication rate and surgical completeness were analyzed between patients who underwent BABA robotic thyroidectomy (robotic group) and those who chose open thyroidectomy (open group) after propensity score matching according to age, sex, body mass index, tumor size, extrathyroidal extension, and lymph node (LN) metastasis.

View Article and Find Full Text PDF

Purpose: The 21-gene recurrence score (RS) assay is currently used for predicting chemotherapeutic benefits for hormone receptor-positive (HR +) early-stage breast cancer patients without consideration regarding racial differences in that predictive value. This study aimed at demonstrating racial differences in the predictive values of the 21-gene RS assay.

Methods: The study cohort was selected from the Surveillance, Epidemiology, and End Results (SEER) database.

View Article and Find Full Text PDF

Background: Postoperative thyroid stimulating hormone (TSH) suppression therapy is recommended for patients with intermediate- and high-risk differentiated thyroid cancer to prevent the recurrence of thyroid cancer. With the recent increase in small thyroid cancer cases, the extent of resection during surgery has generally decreased. Therefore, questions have been raised about the efficacy and long-term side effects of TSH suppression therapy in patients who have undergone a lobectomy.

View Article and Find Full Text PDF

Purpose: We performed breast-conserving surgery (BCS) using periareolar incisions for cancers located far from the nipple-areolar complex (NAC) and examined if BCS via a periareolar incision maximized cosmesis and maintained oncologic safety. One of the most important goals of BCS is to improve cosmesis after surgery and quality of life, but the skin incision can affect cosmesis based on the tumor location.

Methods: Fifty-five patients with breast cancers located far from the NAC underwent BCS via periareolar incisions between January 2017 and April 2018.

View Article and Find Full Text PDF

BACKGROUND Differentiating a distant lesion in breast cancer patients can be challenging. Although pleural schwannoma in breast cancer patient is unusual, clinicians may encounter many similar benign lesions mimicking metastatic breast cancer. CASE REPORT Herein, we present the case of a 62-year-old female patient who developed schwannoma on her pleura, which was suspected as metastasis of breast cancer.

View Article and Find Full Text PDF

Purpose: Nipple-sparing mastectomy (NSM) has become increasingly popular due to improved cosmesis without compromising oncologic safety. Radial and inframammary incisions are usually used to achieve NSM, with periareolar incisions usually being avoided because of the risk to nipple-areola complex viability. In an attempt to maximize esthetic effects, we performed NSM through periareolar incision with immediate reconstruction.

View Article and Find Full Text PDF

Background: There is ongoing debate about whether or not robot-assisted thyroidectomy is appropriate for modified radical neck dissection (MRND). The purpose of this study was to compare the surgical outcomes of robot-assisted MRND with those of a conventional open procedure.

Methods: One hundred and forty-five patients who underwent total thyroidectomy, bilateral central neck dissection, and MRND (robotic, n = 28; open, n = 117) at our institution from June 2011 to June 2015 were enrolled in the study.

View Article and Find Full Text PDF

Purpose: Dendritic cells (DC) are a class of bone marrow-derived cells found in the blood, epithelia, and lymphoid tissues, and are the most efficient antigen presenting cells. The number and function of DC can change dramatically in cancer patients. The aim of this study is to correlate the levels of circulating DC subsets with clinical characteristics in breast cancer patients.

View Article and Find Full Text PDF

BACKGROUND Sarcomas can develop de novo or secondary to radiotherapy after or during breast cancer treatment. Diagnosis can be challenging, as such, a sarcoma is often missed on routine follow-up imaging and often presents with dermatologic findings. CASE REPORT Here, we present a case of a 45-year-old female who developed spindle cell sarcoma on her neck, which was mimicking supraclavicular lymph node metastasis of breast cancer.

View Article and Find Full Text PDF

After publication of this supplement [1, 2], it was brought to our attention that due to an error authors were missing in the following abstracts. This has now been included in this correction.

View Article and Find Full Text PDF

Background: Robotic unilateral modified radical neck dissection (MRND) has been reported to be safe and achieves good oncologic results. However, there is no report of successful robotic bilateral MRND to date. We report the first case series of robotic bilateral MRND through the bilateral axillo-breast approach (BABA).

View Article and Find Full Text PDF

Objectives: This study investigated the potential advantages of robotic thyroidectomy and determined whether it is safe and complete compared with conventional open surgery in patients with papillary thyroid cancer.

Materials And Methods: A total 376 consecutive patients who underwent total thyroidectomy and central neck dissection for papillary thyroid cancer from February 2013 to July 2014 were retrospectively reviewed. Postoperative complication rates and surgical completeness were compared between the robotic and open groups.

View Article and Find Full Text PDF

Purpose: The availability of intraoperative parathyroid hormone (IOPTH) monitoring allows successful focused parathyroidectomy for primary hyperparathyroidism (pHPT). The objective of this study was to report our initial experience in IOPTH monitoring during parathyroid surgery for primary hyperparathyroidsim.

Methods: Between May 2011 and February 2013, 37 patients underwent focused parathyroidectomy due to pHPT.

View Article and Find Full Text PDF

Background: Robotic thyroidectomy has many advantages with comparable oncologic safety over conventional open surgery in low-risk differentiated thyroid cancer cases. However, there have been few reports on the outcomes of patients who have been treated with robotic thyroidectomy for more advanced thyroid cancer. The aim of this study was to investigate the validity of expanding indications of robotic thyroidectomy for more advanced thyroid cancer.

View Article and Find Full Text PDF

Purpose: Various methods of sentinel lymph node (SLN) biopsy in thyroid cancer have been introduced. Tc-99m phytate as a radiotracer has been successfully utilized for SLN biopsy in breast, cervix, and endometrial cancer. We assessed the feasibility of SLN dissection using Tc-99m phytate in papillary thyroid carcinoma (PTC).

View Article and Find Full Text PDF

Background: The BRAF V600E mutation is highly specific for papillary thyroid carcinoma (PTC). A test for this mutation can increase the diagnostic accuracy of fine-needle aspiration cytology (FNAC), but a considerably high false-negative rate for the BRAF V600E mutation on FNAC has been reported. In this study, we investigated the risk factors associated with false-negative BRAF V600E mutation results on FNAC.

View Article and Find Full Text PDF

A robotic approach for thyroid surgery was developed to overcome the limitations of endoscopic thyroidectomy and provide many technical advantages. This approach facilitates the surgeon's control through a magnified three-dimensional view, decreased tremor, and freedom of motion with articulated instruments. Robotic thyroidectomy is safe and technically feasible in patients with well-differentiated, low-risk thyroid cancer.

View Article and Find Full Text PDF

Background: Robotic thyroid surgery using the da Vinci surgical system has certain cosmetic advantages; however, the invasiveness of robotic thyroid surgery is still a concern to many surgeons. Previous research has not directly compared the surgical stress of robotic thyroidectomy with that of conventional open surgery. The aim of the present study was to evaluate surgical stress using postsurgical measurements of several clinical markers.

View Article and Find Full Text PDF

The Currarino triad is a unique complex of congenital caudal anomalies, including anorectal malformation, sacral bony defect and presacral mass. This triad may be associated with Müllerian duct anomalies, such as duplication of the vagina and uterus. Each of these diseases has a familial tendency and sometimes coexist within families.

View Article and Find Full Text PDF

Background: We evaluated the effects of ropivacaine for pain relief after robotic thyroid surgery.

Methods: One hundred eight patients scheduled for robotic thyroid surgery were randomized into ropivacaine (n = 54) or control (n = 54) groups. After surgery, 40 mL of 0.

View Article and Find Full Text PDF

Purpose: A number of researchers have suggested the use of sodium hyaluronate carboxymethyl cellulose (HA-CMC) membrane for preventing postoperative adhesion. This study evaluated the antiadhesive effect and safety of HA-CMC membrane in thyroidectomy for papillary thyroid cancer.

Methods: One hundred sixty-two patients who underwent thyroidectomy were prospectively randomized.

View Article and Find Full Text PDF

Background: The risk factors responsible for hypoparathyroidism after total thyroidectomy have not been completely defined. The present study evaluated one surgeon's personal experience of postoperative hypoparathyroidism after total thyroidectomy for thyroid cancer and predisposing risk factors of postoperative hypoparathyroidism.

Methods: We performed a retrospective analysis of 531 consecutive total thyroidectomy cases for thyroid cancer operated by single surgeon at the Center for Thyroid Cancer, National Cancer Center, Korea, from March 2003 to August 2006.

View Article and Find Full Text PDF