医学部

西岡 宏

ニシオカ ヒロシ  (Hiroshi Nishioka)

基本情報

所属
藤田医科大学 医学部 形成外科 講師
学位
医学博士(2019年 信州大学)

研究者番号
50721023
J-GLOBAL ID
202101001538857351
researchmap会員ID
R000026141

論文

 12
  • Hiroshi Nishioka, Ikkei Takashimizu, Shunsuke Yuzuriha
    Journal of plastic, reconstructive & aesthetic surgery : JPRAS 99 248-255 2024年9月29日  査読有り筆頭著者責任著者
    BACKGROUND: Lymphatic vessels support wound recovery and absorb excess fluid. Blepharoplasty involves excess tissue excision, and this study investigated the relationship between lymph vessel density in excised tissue and the postoperative course. METHODS: Forty eyelids from 21 patients with blepharoptosis who underwent blepharoplasty were included. Each resected excess tissue sample was divided into 4 parts by 3 parasagittal cuts-medial, central, and lateral. The area percentages occupied by lymphatic vessels and elastic fibers in the inner tissue between skin and muscle, exposed by these cuts, were determined histologically. The wound-healing process was assessed at 2 weeks and 1, 3, and 6 months postoperatively, using a visual analog scale (VAS) to estimate edema and the Vancouver Scar Scale (VSS) for scar assessment. RESULTS: With increasing age, the area percentage of lymphatic vessels declined significantly (r = -0.581, p < 0.001), while an increase in solar elastosis was observed. The percentage of lymphatic vessels was highest on the medial side of the eyelid (p < 0.05), where their relative distribution to the "shallow layer" close to the skin was also the highest (p < 0.01). Independent of age, the VSS values at 2 weeks and 1 month postoperatively were significantly lower in patients with a higher area percentage of lymphatic vessels (2 weeks: p < 0.05; 1 month: p < 0.01). CONCLUSIONS: In patients undergoing blepharoplasty, the percentage of lymphatic vessels in the upper eyelid tissue decreased with advancing age. Higher proportions of lymphatic vessels were associated with improved wound-healing outcomes.
  • Hiroshi Taniguchi, Hiroshi Nishioka, Erika Kuriyama, Yoshikazu Inoue, Takayuki Okumoto
    Plastic and reconstructive surgery. Global open 12(5) e5828 2024年5月  査読有り責任著者
    Superior orbital fissure syndrome (SOFS) is a rare complication of craniofacial fracture, caused by damage to cranial nerves Ⅲ, Ⅳ, Ⅴ, and Ⅵ, which typically is associated with ophthalmoplegia, blepharoptosis, pupil dilatation and fixation, and upper eyelid and forehead hypesthesia. However, we here describe a very unusual case of craniofacial fracture with SOFS in the absence of pupil symptoms, involving a patient who was injured when he fell while riding his bicycle. Upon medical examination, we observed mild blepharoptosis and ophthalmoplegia of the right eye without pupillary symptoms. Computed tomography (CT) revealed basal skull and zygomatic fractures. After the patient had been treated conservatively for his skull base fracture, facial bone reduction was performed at our hospital. Because ophthalmoplegia and blepharoptosis remained after the surgery, we checked the preoperative CT images again and discovered stenosis of the superior orbital fissure. Postoperative CT revealed a widening of the superior orbital fissure after the facial bone reduction, and therefore, the patient was given steroid treatment without additional surgery. At 6 months postoperatively, the cranial nerves had completely recovered. Our finding emphasizes that, in contrast to common theory, trauma-induced SOFS can result in pupil-sparing oculomotor nerve palsy.
  • Yoshikazu Inoue, Hiroshi Nishioka, Maki Inukai, Yusuke Shimizu, Masato Kimura, Hirotaka Akita, Takayuki Okumoto
    Aesthetic surgery journal 44(5) NP347-NP353 2024年4月4日  査読有り責任著者
    BACKGROUND: Laser hair removal (LHR) is one of the most requested cosmetic procedures worldwide. A rare side effect is the appearance of excess hair around previously treated areas, known as paradoxical hypertrichosis. OBJECTIVES: The aim of this study was to retrospectively identify the cause of this side effect. METHODS: This study included all patients who underwent LHR at our center between November 2018 and November 2020. Alexandrite laser hair removal (HR) or diode laser super hair removal (SHR) was performed in 70% and 30% of cases, respectively. Clinical features and daily habits of patients with and without postlaser hypertrichosis were compared. RESULTS: Of the 7381 patients who received LHR, 25 patients (0.34%) demonstrated an increase in hair growth compared to baseline. Of these 25 patients, 24 had been treated with alexandrite laser HR (P < .01). The most common site was the upper arm, followed by the periareolar area. Daily sun protection was associated with a significantly lower incidence of hypertrichosis (P < .05), as was confirmed and shown to be independent of Fitzpatrick skin type by binary logistic regression analysis (odds ratio = 0.41, P < .05). CONCLUSIONS: In our clinic, we observed paradoxical hypertrichosis after laser hair removal in a small minority of cases, as described by others. We did not observe differences in incidence related to skin type, but daily sun protection and LHR with diode laser SHR were associated with significant reductions in incidence rates. In addition to previously reported common sites, we also identified the periareolar area as a high-risk region.
  • Hiroshi Nishioka, Shunsuke Yuzuriha, Daisuke Yanagisawa
    Journal of plastic, reconstructive & aesthetic surgery : JPRAS 75(9) 3499-3505 2022年9月  査読有り筆頭著者責任著者
    INTRODUCTION: The primary goal of blepharoplasty for blepharoptosis and blepharochalasis is to elevate the upper eyelid to restore a full field of vision, although many surgeons also aim to provide a better aesthetic outcome. Several facial configuration changes may occur following blepharoplasty. This study examined the effectiveness of vessel clips to preoperatively predict facial configuration alterations. METHODS: We retrospectively enrolled 93 consecutive patients who underwent blepharoplasty correction for blepharoptosis and blepharochalasis with eyebrow elevation. Frontal portrait images were taken at the initial examination without load, preoperatively with vessel clips, and without load at 6 months postoperatively for evaluations of eyebrow height, forehead wrinkle length, and procerus area wrinkle length. Subjective outcomes were also surveyed by questionnaires and interviews at 6 months post-surgically. RESULTS: No significant differences were detected between preoperative measurements with vessel clips and recordings at 6 months postoperatively. Significant correlations were identified among the addition/reduction values for preoperative and postoperative measurements (eyebrow height and forehead wrinkle length: r=0.402, p<0.001; eyebrow height and procerus area wrinkle length: r=-0.327, p<0.01; forehead wrinkle length and procerus area wrinkle length: r=-0.488, p<0.001). Women more frequently described notable changes in wrinkles than men. CONCLUSIONS: Postoperative facial change outcomes for blepharoplasty may be predicted using the simple but effective vessel clip test. A better understanding of surgical results can relieve patient anxiety and contribute to increased satisfaction.
  • Nao Wakabayashi, Hiroshi Nishioka, Shunsuke Yuzuriha
    Plastic and reconstructive surgery. Global open 10(2) e4109 2022年2月  査読有り責任著者
    Factor XIII (FXIII) is the final factor in the coagulation cascade. FXIII plays a critical role in clot stabilization by cross-linking fibrin and making the clot denser and stiffer. FXIII plays crucial roles in platelet clot retraction, wound healing, and tissue repair. When FXIII is deficient, unusual bleeding that persists for several days, delayed healing, and morbid granulation may occur. We present a case of acquired FXIII deficiency presenting as recurrent bleeding after head trauma. A 66-year-old man fell from a ladder and sustained a head injury. The patient had a history of postremission acute myeloid leukemia and Stanford type B aortic dissection and was on three antihypertensives but no antiplatelets or anticoagulants. Approximately 1 month postinjury, the patient suddenly experienced repeated bleeding and hematoma. Routine coagulation tests were normal; therefore, we suspected another type of coagulation disorder. Low FXIII activity was identified 39 days postinjury. We immediately administered concentrated human coagulation FXIII (Fibrogammin P). The patient's head contusion was completely healed by day 55 postinjury. Acquired FXIII deficiency should be considered when routine coagulation test results are normal. Plastic surgeons who treat injuries routinely must be cognizant of FXIII deficiency because the condition can be life-threatening and early detection is important. Whenever the process of wound healing is unusual or hematoma and bleeding recur unexpectedly with no clear explanation-despite suitable treatments-FXIII deficiency should be suspected and, if present, must be appropriately treated without delay.

MISC

 40

共同研究・競争的資金等の研究課題

 2