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  1. Article: A Survey on Procedural Sedation and Analgesia for Pediatric Facial Laceration Repair in Korea.

    Lee, Dongkyu / Yeo, Hyeonjung / Lee, Yunjae / Park, Hyochun / Park, Hannara

    Archives of plastic surgery

    2023  Volume 50, Issue 1, Page(s) 30–36

    Abstract: ... ...

    Abstract Background
    Language English
    Publishing date 2023-02-06
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 2694943-X
    ISSN 2234-6171 ; 2234-6163
    ISSN (online) 2234-6171
    ISSN 2234-6163
    DOI 10.1055/s-0042-1759792
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Extraordinarily aggressive cutaneous sarcomatoid squamous cell carcinoma of the face: a case report.

    Lee, Yunjae / Lee, Dongkyu / Yeo, Hyeonjung / Park, Hannara / Park, Hyochun

    Archives of craniofacial surgery

    2022  Volume 23, Issue 2, Page(s) 77–82

    Abstract: Sarcomatoid squamous cell carcinoma (SSCC), a biphasic malignant tumor consisting of atypical squamous epithelial and mesenchymal elements mixed with epithelioid and spindle cells, is a variant of squamous cell carcinoma. Cutaneous SSCC is very rare and ... ...

    Abstract Sarcomatoid squamous cell carcinoma (SSCC), a biphasic malignant tumor consisting of atypical squamous epithelial and mesenchymal elements mixed with epithelioid and spindle cells, is a variant of squamous cell carcinoma. Cutaneous SSCC is very rare and aggressive and has a poor prognosis. Here, we report a case of cutaneous SSCC with satellites and in-transit metastases. A 79-year-old woman presented with a protruding mass on the left temporal area sized 1.2× 1.0 cm. The punch biopsy report indicated keratoacanthoma or well-differentiated squamous cell carcinoma. The size of the tumor increased to 2.7× 2.0 cm after 8 days. An excisional biopsy was performed with a 2 mm safety margin. The tumor was identified as SSCC with a clear resection margin. Reoperation was performed thrice with an increased safety margin of 10 mm; however, the cancer recurred along with satellites and in-transit metastases. Chemoradiotherapy was administered; however, the size of the tumor increased along with satellites and in-transit metastases. The patient expired 162 days after the initial excision. Complete excision and immediate multidisciplinary approach should be combined during the early stages due to the aggressiveness and poor prognosis of cutaneous SSCC with satellites and in-transit metastasis.
    Language English
    Publishing date 2022-04-20
    Publishing country Korea (South)
    Document type Case Reports
    ZDB-ID 2800630-6
    ISSN 2287-5603 ; 2287-1152
    ISSN (online) 2287-5603
    ISSN 2287-1152
    DOI 10.7181/acfs.2022.00059
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Surgical refinement of the purse-string suture for skin and soft tissue defects of the head and neck.

    Park, Hyochun / Lee, Yunjae / Yeo, Hyeonjung / Park, Hannara

    Archives of craniofacial surgery

    2021  Volume 22, Issue 4, Page(s) 183–192

    Abstract: Background: The purse-string suture (PSS) is a simple and rapid wound closure method that results in minimal scarring. It has been used to treat circular or oval skin defects caused by tumor excision or trauma. However, due to obscurity, it is not ... ...

    Abstract Background: The purse-string suture (PSS) is a simple and rapid wound closure method that results in minimal scarring. It has been used to treat circular or oval skin defects caused by tumor excision or trauma. However, due to obscurity, it is not widely used, especially for the head and neck. This study aimed to modify the PSS to obtain predictable and acceptable results.
    Methods: A total of 45 sites in 39 patients with various types of skin and soft tissue defects in the head and neck were treated with PSS. We used PDS II (2-0 to 5-0), which is an absorbable suture. Minimal dissection of the subcutaneous layer was performed. The suture knot was hidden by placing it in the dissection layer. Depending on the characteristics of the skin and soft tissue defects, additional surgical interventions such as side-to-side advancement sutures, double PSS, or split-thickness skin graft were applied.
    Results: All wounds healed completely without any serious complications. Large defects up to 45 mm in diameter were successfully reconstructed using only PSS. Postoperative radiating folds were almost flattened after approximately 1-2 months.
    Conclusion: PSS is simple, rapid, and relatively free from surgical design. Owing to the circumferential advancement of the surrounding tissue, PSS always results in a smaller scar than the initial lesion and less distortion of the body structures around the wound in the completely healed defect. If the operator can predict the process of healing and immediate radiating folds, PSS could be a favorable option for round skin defects in the head and neck.
    Language English
    Publishing date 2021-08-20
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 2800630-6
    ISSN 2287-5603 ; 2287-1152
    ISSN (online) 2287-5603
    ISSN 2287-1152
    DOI 10.7181/acfs.2021.00297
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: A Survey on Procedural Sedation and Analgesia for Pediatric Facial Laceration Repair in Korea

    Lee, Dongkyu / Yeo, Hyeonjung / Lee, Yunjae / Park, Hyochun / Park, Hannara

    Archives of Plastic Surgery

    2023  Volume 50, Issue 01, Page(s) 30–36

    Abstract: Background: Most children with facial lacerations require sedation for primary sutures. However, sedation guidelines for invasive treatment are lacking. This study evaluated the current status of the sedation methods used for pediatric facial laceration ...

    Abstract Background: Most children with facial lacerations require sedation for primary sutures. However, sedation guidelines for invasive treatment are lacking. This study evaluated the current status of the sedation methods used for pediatric facial laceration repair in Korea.
    Methods: We surveyed one resident in each included plastic surgery training hospital using face-to-face interviews or e-mail correspondence. The health care center types (secondary or tertiary hospitals), sedation drug types, usage, and dosage, procedure sequence, monitoring methods, drug effects, adverse events, and operator and guardian satisfaction were investigated.
    Results: We included 45/67 hospitals (67%) that used a single drug, ketamine in 31 hospitals and chloral hydrate in 14 hospitals. All health care center used similar sedatives. The most used drug administered was 5 mg/kg intramuscular ketamine (10 hospitals; 32%). The most common chloral hydrate administration approach was oral 50 mg/kg (seven hospitals; 50%). Twenty-two hospitals (71%) using ketamine followed this sequence: administration of sedatives, local anesthesia, primary repair, and imaging work-up. The most common sequence used for chloral hydrate (eight hospitals; 57%) was local anesthesia, administration of sedatives, imaging work-up, and primary repair. All hospitals that used ketamine and seven (50%) of those using chloral hydrate monitored oxygen saturation. Median operator satisfaction differed significantly between ketamine and chloral hydrate (4.0 [interquartile range, 4.0–4.0] vs. 3.0 [interquartile range, 3.0–4.0]; p <0.001).
    Conclusion: The hospitals used various procedural sedation methods for children with facial lacerations. Guidelines that consider the patient's condition and drug characteristics are needed for safe and effective sedation.
    Keywords ketamine ; chloral hydrate ; hypnotics and sedatives ; pediatrics ; surveys and questionnaires
    Language English
    Publishing date 2023-01-01
    Publisher Thieme Medical Publishers, Inc.
    Publishing place Stuttgart ; New York
    Document type Article
    ZDB-ID 2694943-X
    ISSN 2234-6171 ; 2234-6163 ; 2234-6171
    ISSN (online) 2234-6171
    ISSN 2234-6163 ; 2234-6171
    DOI 10.1055/s-0042-1759792
    Database Thieme publisher's database

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  5. Article: Vulvar Reconstruction Using Keystone Flaps Based on the Perforators of Three Arteries.

    Lee, Yunjae / Lee, Sanghun / Lee, Dongkyu / Yeo, Hyeonjung / Park, Hannara / Park, Hyochun

    Archives of plastic surgery

    2022  Volume 49, Issue 6, Page(s) 724–728

    Abstract: Various flaps are used to reconstruct skin and soft tissue defects of the vulva following resection of malignancies. Whenever possible, reconstruction using local flaps is the standard treatment. Here, we describe vulvar defect reconstruction using ... ...

    Abstract Various flaps are used to reconstruct skin and soft tissue defects of the vulva following resection of malignancies. Whenever possible, reconstruction using local flaps is the standard treatment. Here, we describe vulvar defect reconstruction using keystone flaps. Standard keystone flaps are based on randomly located vascular perforators. However, we designed a keystone flap that includes perforators of three named arteries (the anterior labial artery of the external pudendal artery, cutaneous branches of the obturator artery, and posterior labial artery of the internal pudendal artery) and the pudendal nerve, which accompanies the internal pudendal artery. Four patients with squamous cell carcinoma and extramammary Paget's disease of the vulva underwent radical vulvectomy and keystone flaps including perforators of three arteries. Depending on the morphology of the defects, keystone flaps were used with different designs. For elliptical and unilateral vulvar defects, a standard keystone flap was designed, and for defects on both sides of the vulva, a double opposing keystone flap was used. For oval defects, the omega variant keystone flap was designed, and when the morphology of the defect needed rotation of the flap, a rotational keystone flap was designed. All the patients showed good function and sensation, with an acceptable cosmetic appearance.
    Language English
    Publishing date 2022-12-13
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 2694943-X
    ISSN 2234-6171 ; 2234-6163
    ISSN (online) 2234-6171
    ISSN 2234-6163
    DOI 10.1055/s-0042-1756294
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Optimal timing for local ablative treatment of bone oligometastases in non-small cell lung cancer.

    Lee, Jayoung / Kim, Jung A / An, Tai Joon / Lee, Hyochun / Han, Eun Ji / Sa, Young Jo / Kim, Hyo Rim / Park, Chan Kwon / Kim, Tae-Jung / Lim, Jeong Uk

    Journal of bone oncology

    2023  Volume 42, Page(s) 100496

    Abstract: Oligometastases is a term commonly used to describe a disease state characterized by a limited number of distant metastases, and represents a transient phase between localized and widespread systemic diseases. This subgroup of stage IV cancer has ... ...

    Abstract Oligometastases is a term commonly used to describe a disease state characterized by a limited number of distant metastases, and represents a transient phase between localized and widespread systemic diseases. This subgroup of stage IV cancer has increased in clinical importance due to the possibility of curative rather than palliative treatment. Among advanced lung cancer patients, 30-40% show bone metastases, and can show complications such as pathological fractures. Many prospective studies have shown efficacy of localized treatment in oligometastatic non-small cell lung cancer (NSCLC) in improving progression-free survival and overall survival. Compared to metastases in other organs, bone metastases are unique in terms of tumor microenvironment and clinical outcomes. Radiotherapy is the most frequently used treatment modality for local ablative treatment for both primary and metastatic lesions. Stereotactic body radiation therapy demonstrated more rapid and effective pain control compared to conventional 3D conformal radiotherapy. Radiotherapy improved outcomes in terms of time-to-skeletal related events skeletal-related events (SRE), hospitalization for SRE, pain relief, and overall survival in patients with bone metastases. Decision on timing of local ablative treatment depends on patient's overall clinical status, treatment goals, potential side effects of each approach, and expected initial responses to systemic anti-cancer treatment.
    Language English
    Publishing date 2023-08-02
    Publishing country Netherlands
    Document type Journal Article ; Review
    ISSN 2212-1366
    ISSN 2212-1366
    DOI 10.1016/j.jbo.2023.100496
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Vulvar Reconstruction Using Keystone Flaps Based on the Perforators of Three Arteries

    Lee, Yunjae / Lee, Sanghun / Lee, Dongkyu / Yeo, Hyeonjung / Park, Hannara / Park, Hyochun

    Archives of Plastic Surgery

    2022  Volume 49, Issue 06, Page(s) 724–728

    Abstract: Various flaps are used to reconstruct skin and soft tissue defects of the vulva following resection of malignancies. Whenever possible, reconstruction using local flaps is the standard treatment. Here, we describe vulvar defect reconstruction using ... ...

    Abstract Various flaps are used to reconstruct skin and soft tissue defects of the vulva following resection of malignancies. Whenever possible, reconstruction using local flaps is the standard treatment. Here, we describe vulvar defect reconstruction using keystone flaps. Standard keystone flaps are based on randomly located vascular perforators. However, we designed a keystone flap that includes perforators of three named arteries (the anterior labial artery of the external pudendal artery, cutaneous branches of the obturator artery, and posterior labial artery of the internal pudendal artery) and the pudendal nerve, which accompanies the internal pudendal artery. Four patients with squamous cell carcinoma and extramammary Paget's disease of the vulva underwent radical vulvectomy and keystone flaps including perforators of three arteries. Depending on the morphology of the defects, keystone flaps were used with different designs. For elliptical and unilateral vulvar defects, a standard keystone flap was designed, and for defects on both sides of the vulva, a double opposing keystone flap was used. For oval defects, the omega variant keystone flap was designed, and when the morphology of the defect needed rotation of the flap, a rotational keystone flap was designed. All the patients showed good function and sensation, with an acceptable cosmetic appearance.
    Keywords surgical procedures ; local flap ; artery ; perineum ; vulva
    Language English
    Publishing date 2022-11-01
    Publisher Thieme Medical Publishers, Inc.
    Publishing place Stuttgart ; New York
    Document type Article
    ZDB-ID 2694943-X
    ISSN 2234-6171 ; 2234-6163 ; 2234-6171
    ISSN (online) 2234-6171
    ISSN 2234-6163 ; 2234-6171
    DOI 10.1055/s-0042-1756294
    Database Thieme publisher's database

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  8. Article: Cutaneous Horn in Premalignant and Malignant Conditions.

    Park, Hyochun / Kim, Wonwoo / Kim, Hoonnam / Yeo, Hyeonjung

    Archives of craniofacial surgery

    2016  Volume 17, Issue 1, Page(s) 25–27

    Abstract: Cutaneous horns are conical, circumscribed protuberances formed by densely layered keratin. These lesions originate from basal keratinocytes and may manifest as benign, premalignant, or malignant cutaneous pathology in chronically sun-damaged areas. ... ...

    Abstract Cutaneous horns are conical, circumscribed protuberances formed by densely layered keratin. These lesions originate from basal keratinocytes and may manifest as benign, premalignant, or malignant cutaneous pathology in chronically sun-damaged areas. Complete surgical excision with histologic examination is needed for potential malignancy. In this report, we describe two elderly women presenting with solitary facial cutaneous horns, which were respectively diagnosed as actinic keratosis and squamous cell carcinoma.
    Language English
    Publishing date 2016-03-21
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 2800630-6
    ISSN 2287-5603 ; 2287-1152
    ISSN (online) 2287-5603
    ISSN 2287-1152
    DOI 10.7181/acfs.2016.17.1.25
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Variables Influencing the Depth of Conscious Sedation in Plastic Surgery: A Prospective Study.

    Yeo, Hyeonjung / Kim, Wonwoo / Park, Hyochun / Kim, Hoonnam

    Archives of plastic surgery

    2017  Volume 44, Issue 1, Page(s) 5–11

    Abstract: Background: Conscious sedation has been widely utilized in plastic surgery. However, inadequate research has been published evaluating adequate drug dosage and depth of sedation. In clinical practice, sedation is often inadequate or accompanied by ... ...

    Abstract Background: Conscious sedation has been widely utilized in plastic surgery. However, inadequate research has been published evaluating adequate drug dosage and depth of sedation. In clinical practice, sedation is often inadequate or accompanied by complications when sedatives are administered according to body weight alone. The purpose of this study was to identify variables influencing the depth of sedation during conscious sedation for plastic surgery.
    Methods: This prospective study evaluated 97 patients who underwent plastic surgical procedures under conscious sedation. Serum aspartate aminotransferase (AST), alanine aminotransferase (ALT), creatinine, and glucose levels were measured. Midazolam and ketamine were administered intravenously according to a preset protocol. Bispectral index (BIS) recordings were obtained to evaluate the depth of sedation 4, 10, 15, and 20 minutes after midazolam administration. Associations between variables and the BIS were assessed using multiple regression analysis.
    Results: Alcohol intake and female sex were positively associated with the mean BIS (P<0.01). Age was negatively associated with the mean BIS (P<0.01). Body mass index (P=0.263), creatinine clearance (P=0.832), smoking history (P=0.398), glucose (P=0.718), AST (P=0.729), and ALT (P=0.423) were not associated with the BIS.
    Conclusions: Older patients tended to have a greater depth of sedation, whereas females and patients with greater alcohol intake had a shallower depth of sedation. Thus, precise dose adjustments of sedatives, accounting for not only weight but also age, sex, and alcohol consumption, are required to achieve safe, effective, and predictable conscious sedation.
    Language English
    Publishing date 2017-01-20
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 2694943-X
    ISSN 2234-6171 ; 2234-6163
    ISSN (online) 2234-6171
    ISSN 2234-6163
    DOI 10.5999/aps.2017.44.1.5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: A Giant Keratoacanthoma Treated with Surgical Excision.

    Park, Hyochun / Park, Hannara / Kim, Hoonnam / Yeo, Hyeonjung

    Archives of craniofacial surgery

    2015  Volume 16, Issue 2, Page(s) 92–95

    Abstract: A keratoacanthoma is a rapidly growing cutaneous tumor that spontaneously involutes in most instances. A giant keratoacanthoma is a rare variant and are characterized by lesions larger than 20 mm in diameter. We report a 56-year-old man with a rapidly ... ...

    Abstract A keratoacanthoma is a rapidly growing cutaneous tumor that spontaneously involutes in most instances. A giant keratoacanthoma is a rare variant and are characterized by lesions larger than 20 mm in diameter. We report a 56-year-old man with a rapidly growing tumor of the right cheek, which was diagnosed as keratoacanthoma. The mass was excised completely under general anesthesia, followed by Limberg flap for reconstruction. Intraoperative frozen section histology suggested the lesion to be a well-differentiated squamous cell carcinoma, whereas final histopathology was consistent with keratoacanthoma. We herein report the first case of a giant keratoacanthoma treated with surgical excision in Korea and discuss the clinical and histopathological features of keratoacanthoma, with a review of the literature.
    Language English
    Publishing date 2015-08-11
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 2800630-6
    ISSN 2287-5603 ; 2287-1152
    ISSN (online) 2287-5603
    ISSN 2287-1152
    DOI 10.7181/acfs.2015.16.2.92
    Database MEDical Literature Analysis and Retrieval System OnLINE

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