1.Impacts of Subtype on Clinical Feature and Outcome of Male Breast Cancer: Multicenter Study in Korea (KCSG BR16-09)
Jieun LEE ; Keun Seok LEE ; Sung Hoon SIM ; Heejung CHAE ; Joohyuk SOHN ; Gun Min KIM ; Kyung-Hee LEE ; Su Hwan KANG ; Kyung Hae JUNG ; Jae-ho JEONG ; Jae Ho BYUN ; Su-Jin KOH ; Kyoung Eun LEE ; Seungtaek LIM ; Hee Jun KIM ; Hye Sung WON ; Hyung Soon PARK ; Guk Jin LEE ; Soojung HONG ; Sun Kyung BAEK ; Soon Il LEE ; Moon Young CHOI ; In Sook WOO
Cancer Research and Treatment 2023;55(1):123-135
Purpose:
The treatment of male breast cancer (MBC) has been extrapolated from female breast cancer (FBC) because of its rarity despite their different clinicopathologic characteristics. We aimed to investigate the distribution of intrinsic subtypes based on immunohistochemistry, their clinical impact, and treatment pattern in clinical practice through a multicenter study in Korea.
Materials and Methods:
We retrospectively analyzed clinical data of 248 MBC patients from 18 institutions across the country from January 1995 to July 2016.
Results:
The median age of MBC patients was 63 years (range, 25 to 102 years). Among 148 intrinsic subtype classified patients, 61 (41.2%), 44 (29.7%), 29 (19.5%), and 14 (9.5%) were luminal A, luminal B, human epidermal growth factor receptor 2, and triple-negative breast cancer, respectively. Luminal A subtype showed trends for superior survival compared to other subtypes. Most hormone receptor-positive patients (166 patients, 82.6%) received adjuvant endocrine treatment. Five-year completion of adjuvant endocrine treatment was associated with superior disease-free survival (DFS) in patients classified with an intrinsic subtype (hazard ratio [HR], 0.15; 95% confidence interval [CI], 0.04 to 0.49; p=0.002) and in all patients (HR, 0.16; 95% CI, 0.05 to 0.54; p=0.003).
Conclusion
Distribution of subtypes of MBC was similar to FBC and luminal type A was most common. Overall survival tended to be improved for luminal A subtype, although there was no statistical significance. Completion of adjuvant endocrine treatment was associated with prolonged DFS in intrinsic subtype classified patients. MBC patients tended to receive less treatment. MBC patients should receive standard treatment according to guidelines as FBC patients.
2.Delayed Treatment of Iatrogenic Brachial Arteriovenous Fistula
Young-jin YOUN ; Chang Wan KIM ; Il Hwan PARK ; Chun Sung BYUN
The Korean Journal of Thoracic and Cardiovascular Surgery 2020;53(6):408-410
Iatrogenic vascular injuries may occur during venipuncture, arterial cannulation, or catheterization procedures. Brachial arteriovenous fistula (AVF) resulting from antecubital vascular access is rare and develops slowly. We report the case of an 18-year-old man who had developed iatrogenic brachial AVF. He had a history of several venipunctures in the left arm at the age of 10 months. Doppler ultrasonography and computed tomographic angiography were used to establish a diagnosis of brachial AVF, and surgical correction of the AVF was performed. As our case indicates, delayed surgery can be considered as a treatment option and may be associated with a decreased risk of vascular complications in the management of iatrogenic brachial AVF in infants.
3.Clinical Characteristics of Clear Cell Ovarian Cancer: A Retrospective Multicenter Experience of 308 Patients in South Korea
Hee Yeon LEE ; Ji Hyung HONG ; Jae Ho BYUN ; Hee-Jun KIM ; Sun Kyung BAEK ; Jin Young KIM ; Ki Hyang KIM ; Jina YUN ; Jung A KIM ; Kwonoh PARK ; Hyo Jin LEE ; Jung Lim LEE ; Young-Woong WON ; Il Hwan KIM ; Woo Kyun BAE ; Kyong Hwa PARK ; Der-Sheng SUN ; Suee LEE ; Min-Young LEE ; Guk Jin LEE ; Sook Hee HONG ; Yun Hwa JUNG ; Ho Jung AN
Cancer Research and Treatment 2020;52(1):277-283
Purpose:
The purpose of this study was to evaluate clinical characteristics and treatment pattern of ovarian clear cell carcinoma (OCCC) in Korea and the role of adjuvant chemotherapy in earlystage.
Materials and Methods:
Medical records of 308 cases of from 21 institutions were reviewed and data including age, performance status, endometriosis, thromboembolism, stage, cancer antigen 125, treatment, recurrence, and death were collected.
Results:
Regarding stage of OCCC, it was stage I in 194 (63.6%), stage II in 34 (11.1%), stage III in 66 (21.6%), and stage IV in 11 (3.6%) patients. All patients underwent surgery. Optimal surgery (residual disease ≤ 1 cm) was achieved in 89.3%. Majority of patients (80.5%) received postoperative chemotherapy. The most common regimen was taxane-platinum combination (96%). Median relapse-free survival (RFS) was 138.5 months for stage I, 33.4 for stage II, 19.3 for stage III, and 9.7 for stage IV. Median overall survival (OS) were not reached, 112.4, 48.7, and 18.3 months for stage I, II, III, and IV, respectively. Early-stage (stage I), endometriosis, and optimal debulking were identified as favorable prognostic factors for RFS. Early-stage and optimal debulking were also favorable prognostic factors for OS. Majority of patients with early-stage received adjuvant chemotherapy. However, additional survival benefit was not found in terms of recurrence.
Conclusion
Majority of patients had early-stage and received postoperative chemotherapy regardless of stage. Early-stage and optimal debulking were identified as favorable prognostic factors. In stage IA or IB, adding adjuvant chemotherapy did not show difference in survival. Further study focusing on OCCC is required.
4.Sequential reconstruction for recurrent head and neck cancer: A 10-year experience
Soon Won CHUNG ; Il Hwan BYUN ; Won Jai LEE
Archives of Plastic Surgery 2019;46(5):449-454
BACKGROUND: Most patients with head and neck cancer successfully undergo oncologic resection followed by free or local flap reconstruction, depending on the tumor’s size and location. Despite effective curative resection and reconstruction, head and neck cancer patients still face a high risk of recurrence and the possibility of a second primary cancer. Moreover, surgeons hesitate to perform sequential reconstruction following curative resection for several reasons. Few large-scale studies on this subject are available. Therefore, we retrospectively evaluated the outcome of sequential head and neck reconstruction to determine the possible risks. METHODS: In total, 467 patients underwent head and neck reconstruction following cancer resection at our center from 2008 to 2017. Of these cases, we retrospectively reviewed the demographic and clinical features of 58 who had sequential head and neck reconstruction following resection of recurrent cancer. RESULTS: Our study included 43 males (74.1%) and 15 females (25.9%). The mean age at the initial operation was 55.4±15.3 years, while the mean age at the most recent operation was 59.0±14.3 years. The interval between the first and second operations was 49.2±62.4 months. Twelve patients (20.7%) underwent surgery on the tongue, and 12 (20.7%) had procedures on the oropharynx. Thirty-four patients (58.6%) received a sequential free flap reconstruction, and 24 patients (41.4%) were treated using locoregional flaps. No cases of flap failure occurred. CONCLUSIONS: Our findings suggest that patients who need additional operations with recurrent head and neck cancer could optimally benefit from sequential curative resections and reconstructions.
Female
;
Free Tissue Flaps
;
Head and Neck Neoplasms
;
Head
;
Humans
;
Male
;
Microsurgery
;
Neck
;
Neoplasms, Second Primary
;
Oropharynx
;
Recurrence
;
Retrospective Studies
;
Surgeons
;
Tongue
5.Patient Satisfaction with Implant Based Breast Reconstruction Associated with Implant Volume and Mastectomy Specimen Weight Ratio.
Woo Yeol BAEK ; Il Hwan BYUN ; Young Seok KIM ; Dae Hyun LEW ; Joon JEONG ; Tai Suk ROH
Journal of Breast Cancer 2017;20(1):98-103
PURPOSE: Breast volume assessment is one of the most important steps during implant-based breast reconstruction because it is critical in selecting implant size. According to previous studies, there is a close relationship between the mastectomy specimen weight and resected breast volume. The aim of this study was to evaluate long-term patient satisfaction with implant-based breast reconstruction guided by the ratio of implant volume to mastectomy specimen weight. In doing so, we describe the ideal ratio for patient satisfaction. METHODS: A total of 84 patients who underwent implant-based breast reconstruction for breast cancer were included in this study. The patients were grouped by the ratio of implant size to mastectomy specimen weight (group 1, <65%; group 2, 65%–75%; and group 3, >75%). Outcome analysis was performed using a questionnaire of patient satisfaction and the desired implant size. RESULTS: Patient satisfaction scores concerning the postoperative body image, size, and position of the reconstructed breast were significantly higher in group 2. The average ratio of the ideal implant volume to mastectomy specimen weight for each group was 71.9% (range, 54.5%–96.7%), with the differences across the three groups being not significant (p=0.244). CONCLUSION: Since there is an increase in breast reconstruction, selecting the appropriate breast implant is undoubtedly important. Our novel technique using the ratio of implant volume to mastectomy specimen weight provides physicians a firm guide to intraoperative selection of the proper implant in reconstructive breast surgery.
Body Image
;
Breast Implants
;
Breast Neoplasms
;
Breast*
;
Female
;
Humans
;
Mammaplasty*
;
Mastectomy*
;
Patient Satisfaction*
6.Facial Flap Repositioning in Posttraumatic Facial Asymmetry.
Il Hwan BYUN ; Dahn BYUN ; Woo Yeol BAEK
Archives of Craniofacial Surgery 2016;17(4):240-243
Perfect facial and body symmetry is an important aesthetic concept which is very difficult, if not impossible, to achieve. Yet, facial asymmetries are commonly encountered by plastic and reconstructive surgeons. Here, we present a case of posttraumatic facial asymmetry successfully treated with a unique concept of facial flap repositioning. A 25-year-old male patient visited our department with severe posttraumatic facial asymmetry. There was deviated nasal bone and implant to the right, and the actual facial appearance asymmetry was much more severe compared to the computed tomography, generally shifted to the right. After corrective rhinoplasty, we approached through intraoral incision, and much adhesion from previous surgeries was noted. We meticulously elevated the facial flap of both sides, mainly involving the cheeks. The elevated facial flap was shifted to the left, and after finding the appropriate location, we sutured the middle portion of the flap to the periosteum of anterior nasal spine for fixation. We successfully freed the deviated facial tissues and repositioned it to improve symmetry in a single stage operation. We conclude that facial flap repositioning is an effective technique for patients with multiple operation history, and such method can successfully apply to other body parts with decreased tissue laxity.
Adult
;
Cheek
;
Facial Asymmetry*
;
Human Body
;
Humans
;
Male
;
Methods
;
Nasal Bone
;
Periosteum
;
Plastics
;
Rhinoplasty
;
Spine
;
Surgeons
;
Surgical Flaps
7.Analysis of Sternal Fixation Results According to Plate Type in Sternal Fracture.
Chun Sung BYUN ; Il Hwan PARK ; Wan Jin HWANG ; Yeiwon LEE ; Hyun Min CHO
The Korean Journal of Thoracic and Cardiovascular Surgery 2016;49(5):361-365
BACKGROUND: Sternal fractures are relatively rare, and caused mainly by blunt anterior chest wall trauma. In most cases, sternal fractures are treated conservatively. However, if the patient exhibits problematic symptoms such as intractable chest wall pain or bony crepitus due to sternal instability, surgical correction is indicated. But no consensus exists regarding the most appropriate surgical method. We analyzed the results of surgical fixation in cases of sternal fracture in order to identify which surgical method led to the best outcomes. METHODS: We retrospectively reviewed the medical records of patients with sternal fractures from December 2008 to December 2011, and found 19 patients who underwent open reduction and internal fixation of the sternum with a longitudinal plate (L-group) or a T-shaped plate (T-group). We investigated patients' characteristics, clinical details regarding each case of chest trauma, the presence of other associated injuries, the type of open reduction and fixation, whether a combined operation was performed, and postoperative complications. RESULTS: Of the 19 patients, 10 patients (52.6%) were male, and their average age was 56.8 years (range, 32 to 82 years). Seven patients (36.8%) had isolated sternal fractures, while 12 (63.2%) had other associated injuries. Seven patients (36.8%) were in the L-group and 12 patients (63.2%) were in the T-group. Three patients in the L-group (42.9%) showed a loosening of the fixation. In all patients in the T-group, the fracture exhibited stable alignment. CONCLUSION: Open reduction and internal fixation with a T-shaped plate in sternal fractures is a safer and more efficient treatment method than treatment with a longitudinal plate, especially in patients with a severely displaced sternum or anterior flail chest, than a longitudinal plate.
Bone Plates
;
Consensus
;
Flail Chest
;
Fracture Fixation
;
Humans
;
Male
;
Medical Records
;
Methods
;
Postoperative Complications
;
Retrospective Studies
;
Sensitivity Training Groups
;
Sternum
;
Thoracic Injuries
;
Thoracic Wall
;
Thorax
8.The Keystone Flap in Greater Trochanter Pressure Sore.
Il Hwan BYUN ; Soon Sung KWON ; Seum CHUNG ; Woo Yeol BAEK
Archives of Reconstructive Microsurgery 2016;25(2):72-74
The keystone flap is a fascia-based island flap with two conjoined V-Y flaps. Here, we report a case of successful treatment of a trochanter pressure sore patient with the traditional keystone flap. A 50-year-old male patient visited our department with a 3×5 cm pressure sore (grade III) to the left of the greater trochanter that was covered with eschar. Debridement was done and the defect size increased to 5×8 cm in an elliptical shape. Doppler ultrasound was then used to locate the inferior gluteal artery perforator near the wound. The keystone flap was designed to the medial side. The perforator based keystone island flap covered the defect without resistance. The site remained clean, and no dehiscence, infection, hematoma, or seroma developed. In general, greater trochanter pressure sores are covered with a perforator based propeller flap or fascia lata flap. However, these flaps have the risk of pedicle kinking and require a large operation site. For the first time, we successfully applied the keystone flap to treat a greater trochanter pressure sore patient. Our design was also favorable with the relaxation skin tension lines. We conclude that the keystone flap including a perforator is a reliable option to reconstruct trochanteric pressure sores.
Arteries
;
Debridement
;
Fascia Lata
;
Femur*
;
Hematoma
;
Humans
;
Male
;
Middle Aged
;
Pressure Ulcer*
;
Relaxation
;
Seroma
;
Skin
;
Ultrasonography
;
Wounds and Injuries
9.Perforator Based Tibialis Anterior Segmental Muscle Island Flap in Lower Extremity Reconstruction.
Il Hwan BYUN ; Soon Sung KWON ; Seum CHUNG ; Woo Yeol BAEK
Archives of Reconstructive Microsurgery 2016;25(2):69-71
Reconstruction of the lower extremities is difficult due to a lack of skin laxity and muscular tissues. Here, we present a case of lower extremity reconstruction via the anterior tibial artery perforator based segmental muscle island flap. Our patient was a 75-year-old male with a chronic ulcerative wound on the right lower leg from an old car accident. A 5.0×0.5 cm size ulcerative wound with tibial bone exposure was noted. We planned to reconstruct the lower extremity defect with a free flap, but the vessel status was severely compromised intraoperatively. Thus, we found the anterior tibial artery perforator using Doppler ultrasound, elevated the tibialis anterior muscle segment flap, and transposed it to cover the defect successfully. The flap presented with a nice contour and the skin graft covering the flap survived completely. There were no complications of the surgical site at three months follow-up and no gait morbidity. This is a meaningful case applying the concept of segmental muscle flap based on a perforator that had advantages including proper bulkiness, vascularization, and preservation of function, which were well applied, leading to great success.
Aged
;
Follow-Up Studies
;
Free Tissue Flaps
;
Gait
;
Humans
;
Leg
;
Lower Extremity*
;
Male
;
Perforator Flap
;
Skin
;
Tibial Arteries
;
Transplants
;
Ulcer
;
Ultrasonography
;
Wounds and Injuries
10.Cardiac Rupture of the Junction of the Right Atrium and Superior Vena Cava in Blunt Thoracic Trauma.
Chun Sung BYUN ; Il Hwan PARK ; Tae Hoon KIM ; Eunbi LEE ; Joong Hwan OH
Korean Journal of Critical Care Medicine 2015;30(1):27-30
Cardiac rupture following blunt thoracic trauma is rarely encountered, since it commonly causes death at the scene. With advances in critical care, blunt cardiac rupture has been successfully treated with well-organized team approach including an emergency physician, anesthesiologist, and cardiac surgeon. We encountered a patient with blunt cardiac rupture of the junction of the superior vena cava and right atrium that extended 7 cm to the right ventricular junction. The patient was successfully resuscitated after a closed thoracostomy and pericardiocentesis with fluid loading. Cardiac injury was repaired via mid-sternotomy without cardiopulmonary bypass. The patient recovered without complications and was discharged on the 7th day after surgery.
Cardiopulmonary Bypass
;
Critical Care
;
Emergencies
;
Heart Atria*
;
Heart Injuries
;
Heart Rupture*
;
Humans
;
Pericardiocentesis
;
Thoracostomy
;
Vena Cava, Superior*

Result Analysis
Print
Save
E-mail