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Tomiyama N, Oyama A, Sato S, Sugita R. Influence of recording field direction on transition noise of stacked media. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20147506010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Shibakusa T, Kurihara S, Tanaka K, Chiba Y, Tsuchiya T, Oyama A. PP255-SUN SUPPRESSION OF FEVER BY ORAL ADMINISTRATION OF THE AMINO ACIDS, CYSTINE AND THEANINE, IN LPS-INDUCED INFLAMMATION MODEL. Clin Nutr 2013. [DOI: 10.1016/s0261-5614(13)60300-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Oashi K, Furukawa H, Nishihara H, Ozaki M, Oyama A, Funayama E, Hayashi T, Kuge Y, Yamamoto Y. Pathophysiological Characteristics of Melanoma In-Transit Metastasis in a Lymphedema Mouse Model. J Invest Dermatol 2013; 133:537-44. [DOI: 10.1038/jid.2012.274] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Oyama A, Komine T, Sugita R. Effect of interlayer exchange coupling on magnetization reversal process in ECC media with high coercivity. EPJ WEB OF CONFERENCES 2013. [DOI: 10.1051/epjconf/20134007003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Hayashi T, Furukawa H, Oyama A, Funayama E, Saito A, Yamamoto Y. Dominant lymph drainage in the upper extremity and upper trunk region: evaluation of lymph drainage in patients with skin melanomas. Int J Clin Oncol 2012; 19:193-7. [PMID: 23224801 DOI: 10.1007/s10147-012-0504-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Accepted: 11/25/2012] [Indexed: 10/27/2022]
Abstract
BACKGROUND The objective of this study is to evaluate the lymph drainage from the primary focus to the regional lymph nodes in patients with melanomas of the upper extremity and upper trunk region. METHOD The study is a retrospective study of 20 patients with upper extremity melanomas and 14 patients with upper trunk melanomas treated with axillary lymph node dissection (ALND) or sentinel lymph node biopsy at the hospital. ALND was performed in 14 cases. In these cases, 12 were curative dissections and 2 were elective dissections. The dominant lymph drainage patterns from the primary regions were analyzed. RESULTS Among the upper extremity and upper trunk region melanomas, lymph drainage to Level I was determined in all cases. In these two regions there were no cases of lymph drainage to Level II not passing through Level I. Furthermore, there were no cases where sentinel lymph node or metastasis of the lymph nodes was clearly determined in Level III. Among the upper extremity melanomas, lymph drainages to the cubital (10 %) and mid-arm nodes (5 %) were established. Among the scapular region melanomas, lymph drainages to the supraclavicular nodes (25 %) were determined. CONCLUSIONS There was a dominant lymph drainage pattern of melanomas of the upper extremity and upper trunk region to Level I. No lymph node dissection of Level III in patients with melanomas of the upper extremity and upper trunk region is necessary unless preoperative examination determines a high possibility of metastasis-positive lymph nodes in level III.
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Funayama E, Sasaki S, Furukawa H, Hayashi T, Yamao T, Takahashi K, Yamamoto Y, Oyama A. Effectiveness of combined pulsed dye and Q-switched ruby laser treatment for large to giant congenital melanocytic naevi. Br J Dermatol 2012; 167:1085-91. [DOI: 10.1111/j.1365-2133.2012.11058.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Oashi K, Furukawa H, Akita S, Nakashima M, Matsuda K, Oyama A, Funayama E, Hayashi T, Hirano A, Yamamoto Y. Vascularised fat flaps lose 44% of their weight 24 weeks after transplantation. J Plast Reconstr Aesthet Surg 2012; 65:1403-9. [DOI: 10.1016/j.bjps.2012.04.036] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Revised: 03/22/2012] [Accepted: 04/26/2012] [Indexed: 11/26/2022]
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Shichinohe R, Furukawa H, Sekido M, Saito A, Hayashi T, Funayama E, Oyama A, Yamamoto Y. Direction of innervation after interpositional nerve graft between facial and hypoglossal nerves in individuals with or without facial palsy: A rat model for treating incomplete facial palsy. J Plast Reconstr Aesthet Surg 2012; 65:763-70. [DOI: 10.1016/j.bjps.2011.12.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Accepted: 12/16/2011] [Indexed: 10/14/2022]
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Kamoshima Y, Terasaka S, Oyama A, Warabi T, Shimoda Y, Houkin K. [A cranial reconstruction using an autologous split calvarial bone combined with a free graft of temporal loose areolar tissue]. NO SHINKEI GEKA. NEUROLOGICAL SURGERY 2012; 40:407-412. [PMID: 22538282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report a new simple method of cranial reconstruction using an autologous split calvarial bone, combined with free graft of temporal loose areolar tissue. A 58-year-old woman suffered from a cranium defect on her left side. The originating bone infection happened after initial brain tumor surgery. Part of the left side of her scalp just above the damaged cranial area had become very thin due to previous cranioplasty, which involved a titanium mesh plate and postoperative infections. We performed a cranial reconstruction with an autologous split calvarial bone, combined with loose areolar tissue free graft, for the damaged area with skin from the inner side. In our case, we expect that the addition of the free graft of loose areolar tissue to the autologous calvarial bone graft will effectively contribute to the skin's healing and provide good cosmetic results in our short follow-up period. A free graft of loose areolar tissue for the damaged skin area may be a new optional method for cranial reconstruction in a patient with skin trouble.
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Saito A, Saito N, Furukawa H, Hayashi T, Oyama A, Funayama E, Minakawa H, Yamamoto Y. Reconstruction of periorbital defects following malignant tumour excision: A report of 50 cases. J Plast Reconstr Aesthet Surg 2012; 65:665-70. [DOI: 10.1016/j.bjps.2011.09.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2011] [Revised: 08/24/2011] [Accepted: 09/06/2011] [Indexed: 11/28/2022]
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Kajii TS, Alam MK, Mikoya T, Oyama A, Koshikawa-Matsuno M, Sugawara-Kato Y, Sato Y, Iida J. Congenital and postnatal factors inducing malocclusions in Japanese unilateral cleft lip and palate patients-determination using logistic regression analysis. Cleft Palate Craniofac J 2012; 50:466-72. [PMID: 22409625 DOI: 10.1597/11-150] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Objective : To assess the congenital and postnatal factors that affect degree of malocclusion in patients with unilateral cleft lip and palate using multivariate statistical analysis. Design : Retrospective study. Patients : All information on 135 subjects with unilateral cleft lip and palate was obtained from an oral examination and radiograph at the initial examination at an orthodontic clinic and from surgical records. Plaster models were taken before orthodontic treatment. The ages of the subjects ranged from 5 to 8 years with a mean age of 6.9 years. All primary surgeries for the patients were performed at a university hospital. Main Outcome Measures : The GOSLON Yardstick was used to assess the dental arch relationships (degree of malocclusion) in patients. Family history of Class III, degree of cleft, and congenitally missing upper lateral incisor on the cleft side were chosen as congenital factors inducing malocclusion. Presurgical orthopedic treatment, cheiloplasty, and palatoplasty were chosen as postnatal factors. Associations between various factors and dental arch relationships were assessed using logistic regression analysis. Results : According to adjusted odds ratios, family history of Class III is associated with a significantly worse dental arch relationship. Palatoplasty using push-back alone correlated to a dental arch relationship that was significantly worse than palatoplasty using push-back with a buccal flap. Conclusions : Multivariate analysis shows evidence that a positive family history of Class III and palatoplasty using push-back alone are associated with worse malocclusion of unilateral cleft lip and palate patients.
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Hayashi T, Furukawa H, Oyama A, Funayama E, Saito A, Murao N, Yamamoto Y. A new uniform protocol of combined corticosteroid injections and ointment application reduces recurrence rates after surgical keloid/hypertrophic scar excision. Dermatol Surg 2012; 38:893-7. [PMID: 22272655 DOI: 10.1111/j.1524-4725.2012.02345.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Published reports indicate that corticosteroid injections can prevent recurrence after keloid excision, but the side effects of repetitive intralesional steroid injections may preclude treatment maintenance. Additionally, few of these studies employed a standardized treatment protocol. OBJECTIVES To analyze the results of a new uniform treatment protocol combining corticosteroid injections and ointment application designed to reduce recurrence rates after excisional surgery in individuals with keloids or hypertrophic scars. METHODS As a standard procedure, the first corticosteroid injection took place after removal of the sutures and then once every 2 weeks after that until it had been done five times. In addition, all postsurgical wounds received self-administered steroid ointment application twice daily for 6 months after suture removal. RESULTS Postoperative follow-up in this series ranged from 24 to 57 months (median 32 months, mean 32.5 months). Recurrence occurred in three of the 21 keloid cases (14.3%) and one of the six hypertrophic scar cases (16.7%). CONCLUSION We evaluated a new standardized adjuvant corticosteroid therapy to prevent recurrence after surgical keloid or hypertrophic scar excision. Using this method, we achieved low recurrence rates.
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Saito A, Furukawa H, Hayashi T, Oyama A, Funayama E, Yamamoto Y. Preliminary report of preoperative assessment of anterolateral thigh flap perforators using real-time virtual sonography system. Microsurgery 2011; 31:499-501. [PMID: 21898882 DOI: 10.1002/micr.20920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2011] [Accepted: 04/22/2011] [Indexed: 11/08/2022]
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Saito A, Furukawa H, Hayashi T, Oyama A, Funayama E, Yamamoto Y. Intraoperative color Doppler sonography in the elevation of anterolateral thigh flap. Microsurgery 2011; 31:582-3. [DOI: 10.1002/micr.20916] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2011] [Accepted: 04/12/2011] [Indexed: 11/09/2022]
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Hayashi T, Furukawa H, Oyama A, Funayama E, Saito A, Yamamoto Y. Dominant lymph drainage in the facial region: evaluation of lymph nodes of facial melanoma patients. Int J Clin Oncol 2011; 17:330-5. [DOI: 10.1007/s10147-011-0293-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2011] [Accepted: 07/08/2011] [Indexed: 11/25/2022]
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Kamoshima Y, Terasaka S, Oyama A, Houkin K. [Cranial reconstruction using autologous split calvarial bone combined with calcium phosphate bone cement: a case report]. NO SHINKEI GEKA. NEUROLOGICAL SURGERY 2011; 39:491-495. [PMID: 21512200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We report a case of cranial reconstruction using autologous split calvarial bone combined with calcium phosphate bone cement (CPC). A 19-years-old man suffered from cranium defect and rhinorrhea originating from frontal skull base fracture in a traffic accident. After CSF hydration treatment had finished, continuously we performed cranial reconstruction with autologous split calvarial bone so that the patient could return to work at an early stage. The use of autologous split calvarial bone with CPC was able to increase stability of the construct and provide excellent cosmetic result in our short follow up period. The combination use of these two materials may be useful for cranial reconstruction in patients with cranium defect.
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Hayashi T, Furukawa H, Oyama A, Funayama E, Saito A, Yamao T, Yamamoto Y. Sentinel lymph node biopsy using real-time fluorescence navigation with indocyanine green in cutaneous head and neck/lip mucosa melanomas. Head Neck 2011; 34:758-61. [DOI: 10.1002/hed.21651] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/22/2010] [Indexed: 11/06/2022] Open
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Furukawa H, Sasaki S, Oyama A, Hayashi T, Funayama E, Saito N, Yamamoto Y. Ethanol sclerotherapy with 'injection and aspiration technique' for giant lymphatic malformation in adult cases. J Plast Reconstr Aesthet Surg 2010; 64:809-11. [PMID: 20947458 DOI: 10.1016/j.bjps.2010.09.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2009] [Revised: 07/02/2010] [Accepted: 09/04/2010] [Indexed: 10/19/2022]
Abstract
Ethanol is a commonly used sclerosant for lymphatic malformation (LM), and recent evidence has shown that macrocystic LMs respond very well to percutaneous sclerotherapy. However, the volume of absolute ethanol that can be injected safely is small (0.5-1 ml/kg), and that is the reason it is often ineffective in extensive LM. We report two cases of giant LM with occasional high fever and pain or abnormal gait. To overcome dose limitation and to prevent systematic toxicities, we performed both injection of absolute ethanol and aspiration of it after 5 min exposure to LM. The injected maximum ethanol dose per one session is 70-260 ml and no systemic complication occurred. The 1-3 sessions of those procedures reduced the frequency of high fever and improved the swelling of those lesions. The injection and aspiration technique maximises the efficacy of sclerotherapy for extensive macrocystic LM in adults.
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Funayama E, Oyama A, Furukawa H, Hayashi T, Sugino M, Yamamoto Y. A new modified technique for removing epidermal cysts using a trepan in one stage with a smaller postoperative scar and no recurrence. Dermatol Surg 2010; 36:2050-2. [PMID: 21044221 DOI: 10.1111/j.1524-4725.2010.01774.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Saito N, Tsutsumida A, Furukawa H, Sekido M, Oyama A, Funayama E, Saito A, Yamamoto Y. Reconstructive considerations in the treatment of soft tissue sarcomas of the cheek. ACTA OTORHINOLARYNGOLOGICA ITALICA : ORGANO UFFICIALE DELLA SOCIETA ITALIANA DI OTORINOLARINGOLOGIA E CHIRURGIA CERVICO-FACCIALE 2010; 30:103-106. [PMID: 20559481 PMCID: PMC2882148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 12/23/2009] [Accepted: 03/05/2010] [Indexed: 05/29/2023]
Abstract
Soft tissue sarcomas of the head and neck region are rare, and very little has been described about the reconstructive methods used after sarcoma resection of cheek soft tissue sarcomas. Reconstructive methods for cheek defects after sarcoma resection are presented and the possibilities, advantages, disadvantages, and expected results are described. A series of 3 patients with cheek soft tissue sarcomas were examined. Reconstructive methods included; one skin graft, a free forearm flap and a cervicofacial flap. All patients had lesions < 5 cm and low-grade tumours, and no case presented local recurrence or metastases. The choice of reconstructive methods depends mostly on the complexity of the defect. In cases comprising comparatively small or minor defects, reconstructions using local flaps, such as the cervicofacial flap, provide better aesthetic and functional results than either free flaps or skin graft.
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Oyama A, Arnaud E, Marchac D, Renier D. Reossification of Cranium and Zygomatic Arch After Monobloc Frontofacial Distraction Advancement for Syndromic Craniosynostosis. J Craniofac Surg 2009; 20 Suppl 2:1905-9. [DOI: 10.1097/scs.0b013e3181b6c634] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Furukawa H, Sasaki S, William M, Sekido M, Tsutsumida A, Oyama A, Yamamoto Y. Modification of thoracoscopy in pectus excavatum: Insertion of both thoracoscope and introducer through a single incision to maximise visualisation. ACTA ACUST UNITED AC 2009; 41:189-92. [PMID: 17701733 DOI: 10.1080/02844310701282054] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Our modification of the Nuss procedure includes insertion of both the introducer and the thoracoscope through the same skin incision, which enables continuous visualisation of the tip of the introducer during blunt dissection across the mediastinum. From January 2001 to January 2005 we studied 32 consecutive patients whose ages ranged from 3 to 30 years. They had all undergone the modified procedure. The mean operating time was 1 hour 44 minutes (range 43 minutes-4 hours 20 minutes). Blood loss was less than 10 ml. There were no intraoperative bleed complications. The modification that we devised may minimise the risk of cardiothoracic and vascular injuries and the procedure is safe.
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Saito N, Hamada JI, Furukawa H, Tsutsumida A, Oyama A, Funayama E, Saito A, Tsuji T, Tada M, Moriuchi T, Yamamoto Y. Laminin-421 produced by lymphatic endothelial cells induces chemotaxis for human melanoma cells. Pigment Cell Melanoma Res 2009; 22:601-10. [PMID: 19508413 DOI: 10.1111/j.1755-148x.2009.00590.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Melanoma has a high tendency to metastasize to lymph nodes, which is one of the clinicopathological factors to indicate poor prognosis. Recent investigations have shown the importance of lymphangiogenesis in lymph node metastasis in a variety of human tumors including melanoma. However, molecular mechanism of lymphatic metastasis is still poorly defined. We examined influence of interactions between normal lymphatic endothelial cells (LECs) and melanoma cells on cell migration. Medium conditioned with LEC (LEC-CM) contained chemotactic and chemokinetic activities for human melanoma cell lines. The chemotactic activity was fractionated in more than 100 kDa, and inactivated by heat-treatment. The chemotactic activity of LEC-CM was abolished by immunodepletion with anti-laminin-1 antibody. And immunoprecipitation and Western blot analyses revealed that LEC-CM contained laminin-421. When melanoma C8161 cells were treated with function-blocking antibodies to integrin alpha3 or alpha6, their chemotactic responses to LEC-CM were markedly reduced. Furthermore, the knock-down of tetraspanin CD151 weakened the chemotactic responses of C8161 and MeWo cells to LEC-CM. These data suggest that laminin-421 secreted by LEC possibly facilitates lymphatic metastasis through the induction of chemotaxis of melanoma cells.
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Saito A, Saito N, Mol W, Furukawa H, Tsutsumida A, Oyama A, Sekido M, Sasaki S, Yamamoto Y. Simvastatin inhibits growth via apoptosis and the induction of cell cycle arrest in human melanoma cells. Melanoma Res 2008; 18:85-94. [DOI: 10.1097/cmr.0b013e3282f60097] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Funayama E, Minakawa H, Oyama A. Forehead lipoma resection via a small remote incision using a surgical raspatory. J Am Acad Dermatol 2007; 56:458-9. [PMID: 17317487 DOI: 10.1016/j.jaad.2006.11.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2006] [Revised: 11/10/2006] [Accepted: 11/15/2006] [Indexed: 10/23/2022]
Abstract
Lipomas are benign tumors and, therefore, a surgical technique that does not leave a visible scar would be an ideal method. A forehead lipoma can be extracted using a small remote incision with endoscopic assistance for aesthetic purposes. However, endoscope-assisted surgery is usually technically demanding, time-consuming, and less cost-effective. In this report, we propose an alternative approach to the surgical resection of a forehead lipoma with a small remote incision. Our method uses a surgical raspatory. Our technique allows the complete removal of the lipoma with no complications using a raspatory passed down a subcutaneous tunnel from an incision placed in an aesthetically advantageous site.
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