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Affiliation |
Hospital Dentistry and Oral Surgery |
Research Interests 【 display / non-display 】
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Oral and Maxillofacial Surgery
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Biomaterial
Graduating School 【 display / non-display 】
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-1986.03
Tohoku University Faculty of Dentistry Graduated
Campus Career 【 display / non-display 】
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1995.08-Now
Akita University Hospital Dentistry and Oral Surgery Associate Professor
Research Achievements 【 display / non-display 】
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A case of angiolipoma of the upper lip
OIKAWA Yuki, IGARASHI Hidemitsu, SUZUKI Kenichiro, KONNO Yasunori, TAKANO Hiroshi, FUKUDA Masayuki
Japanese Journal of Oral and Maxillofacial Surgery ( Japanese Society of Oral and Maxillofacial Surgeons ) 68 ( 2 ) 94 - 98 2022.02 [Refereed]
Research paper (journal)
Angiolipoma is a benign tumor that shows a mixture of adipose tissue and hemangioma-like lesion histologically. It frequently occurs in the trunk and limbs, and it is very rare in the lip. We report a case of angiolipoma of the upper lip. The patient was a 28-year-old woman who was referred to our hospital because of a mass in the right upper lip. A painless elastic-soft tumor was found under the mucosa of the right upper lip. The skin and mucosa just above the swelling was normal. MRI showed an unclearly demarcated lesion measuring 13 × 11 × 5 mm in the right upper lip with a mixed pattern of high and low intensity on T1- and T2-weighted images. An incisional biopsy was performed under local anesthesia, and the histopathological diagnosis was angiolipoma. Based on this diagnosis, the tumor was resected under general anesthesia. Immunohistochemical examination revealed CD31, CD34, α-SMA and VEGF positive cells in the tumor. There has been no recurrence one year after surgery.
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A case of ectopic impacted wisdom tooth which migrated to the mandibular notch
ARIMA Misaki, KUWAJIMA Seiichi, FUKUDA Masayuki, FUKUCHI Mineyo, IGARASHI Hidemitsu, TAKANO Hiroshi
Japanese Journal of Oral and Maxillofacial Surgery ( Japanese Society of Oral and Maxillofacial Surgeons ) 67 ( 5 ) 281 - 285 2021.05 [Refereed]
Research paper (journal)
Ectopic impacted teeth are considered to be caused by congenital malposition of tooth germs, increased internal pressure from cysts, tumor growth, periodontal ligament traction, and rupture of the gubernacular cord. It often progresses asymptomatic, but has been reported to cause pain and infection. Here, we report a case of ectopic impacted tooth in which the mandibular horizontal impacted wisdom tooth migrated to the vicinity of the mandibular notch over 9 years.
A 42-year-old woman visited our department with the chief complaint of pain in the left mandible. Upon comparison with past radiographs, the left impacted mandibular wisdom tooth was found to have migrated to the mandibular notch over 9 years. We performed an ectopic impacted wisdom tooth extraction to improve the
pain.
Fragile soft tissue was found forward the tooth. Histopathological specimens showed no epithelial structure and numerous plasma cell infiltrates. Immunohistochemical staining was negative for cytokeratin. The cause of the migration was considered to be the gubernacular cord thickened by inflammation. After the operation, the pain disappeared, no relapse was observed, and the patient has shown good progress. -
A case of secretory carcinoma of the minor salivary gland in the buccal mucosa
Takano H.
Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology ( Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology ) 33 ( 2 ) 136 - 140 2021.03 [Refereed]
Research paper (journal)
Secretory carcinoma (SC), previously described as mammary analogue secretory carcinoma, is a new subtype of salivary gland cancer that was added to the World Health Organization's classification of head and neck tumors in 2017. Although salivary gland cancer in the minor salivary glands is relatively rare, this disease is difficult to diagnose because of its various pathological tissue images and subtypes. In this report, we describe an SC tumor that occurred in the buccal mucosa and originated in the minor salivary glands. The patient was a 53-year-old man who noticed a mass in his right buccal mucosa. The lesion was initially clinically diagnosed as a benign tumor, but was later surgically excised from the patient under local anesthesia at another hospital. The tumor was pathologically diagnosed as malignant and some of the tumor remained following the initial surgery and the patient was referred to our department for additional surgical treatment. After surgical resection under general anesthesia, histopathological examination of the tumor suggested it was SC. Immunohistochemical staining revealed strongly positive staining for S100, vimentin, and mammaglobin and negative staining for DOG-1 and identify of the ETV6-NTRK3 gene fusion in the tumor cells. Although no subsequent local recurrence or metastasis was observed three years post-operation in this case, standardized treatment protocols and diagnostic methods are generally still lacking for SC. Salivary gland cancers in the minor salivary glands are relatively rare, but differential and accurate diagnosis is important.
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Mandibular ameloblastoma with papillary hyperplasia in the gingiva: A case report
Konno Y.
Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology ( Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology ) 32 ( 4 ) 281 - 284 2020.07 [Refereed]
Research paper (journal)
Although ameloblastomas are relatively common tumors, they rarely occur in the gingiva or oral mucosa. Most gingival or oral ameloblastomas are peripheral (that is, soft-tissue) ameloblastomas; therefore, an exophytic peripheral lesion from an intraosseous ameloblastoma is unusual. Here, we report a 63-year-old man who had an ameloblastoma with papillomatous proliferation in the lingual gingiva. Magnetic resonance imaging showed a well-defined mass in the mandible. These tumors were enucleated intraorally under general anesthesia. Histopathological and immunohistochemical examinations revealed that the respective tumors were a papilloma and an ameloblastoma, with different origins. The histopathological diagnosis was an intraosseous ameloblastoma with papillary hyperplasia. The patient's postoperative course was uneventful during his 20-month post-enucleation follow-up period.
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A case of oxalosis with resorption of alveolar bone and tooth roots
IGARASHI Hidemitsu, FUKUDA Masayuki, FUKUCHI Mineyo, KONNO Yasunori, YAMAZAKI Masato, TAKANO Hiroshi
Japanese Journal of Oral and Maxillofacial Surgery ( Japanese Society of Oral and Maxillofacial Surgeons ) 66 ( 5 ) 251 - 255 2020.05 [Refereed]
Research paper (journal)
Oxalosis is a rare disorder that deposits calcium oxalate in many organs of the body. We report a case of oxalosis with resorption of alveolar bone and tooth roots. The patient was a 60-year-old man who was given a diagnosis of oxalosis in another hospital and was referred to our hospital because of alveolar bone resorption in the right molar region of the mandible. Clinical and imaging examinations revealed resorption of alveolar bone and many teeth roots. Based on the results of histopathological examination, we attributed the resorption of alveolar bone and tooth roots to deposition of calcium oxalate. With time, resorption of the alveolar bone and tooth roots progressed.
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A case of erythema multiforme major induced by nivolumab
SUZUKI Kenichiro, TAKANO Hiroshi, FUKUCHI Mineyo, IGARASHI Hidemitsu, KONNO Yasunori, FUKUDA Masayuki
Journal of The Japanese Stomatological Society ( Japanese Stomatological Society ) 72 ( 1 ) 20 - 25 2023
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Igarashi H, Fukuda M
Oral Oncology ( Oral Oncology ) 108 2020.09 [Refereed]
Prompt report, short report, and research note, etc. (scientific journal) International Co-author
The Abscopal effect is a rare phenomenon whereby tumors outside of the irradiated field regress due to systemic antitumor effects of localized radiotherapy. In patients with oral mucosal melanoma, only one instance of the abscopal effect has been described in the English-language literature [1]. Herein, we describe an instance of the abscopal effect following whole-brain radiation therapy after nivolumab monotherapy in a patient with oral mucosal melanoma.
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A case report of nasopalatine duct cyst occurred after dental implant treatment
YAMAZAKI Masato, FUKUDA Masayuki, TAKANO Hiroshi
Japanese Journal of MaxilloFacial Implants ( Japanese Academy of Maxillofacial Implants ) 16 ( 2 ) 81 - 85 2017.08
There are many reports of tumor which occurred around dental implants, but there are few reports of the cyst. We report a case of nasopalatine duct cyst which occurred in the dental implant insertion area.
A 54-year-old female underwent immediate implant placement in the maxillary right central incisor one year before visiting our hospital. In 2007, panoramic radiograph and CT showed an oval-shaped radiolucency around the apex of the implant. By the hope of the patient, we performed only enucleation of the cyst without implant removal. Histopathological diagnosis was nasopalatine duct cyst. In 2015, panoramic radiograph and CT image showed a recurrence of the cyst. We performed enucleation of the cyst again and implant removal because of the agreement of the patient. Histopathological diagnosis was nasopalatine duct cyst. The postoperative course was uneventful. The recurrence is not seen 20 months after operation.
◆Original paper【 display / non-display 】
◆Other【 display / non-display 】
Books 【 display / non-display 】
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Biomaterials for cleft lip and palate surgery. Current experimental study for treatment of cleft lip and palate
Fukuda M, Miyamoto Y
Quintessence Publishing Co., Ltd. 2008.10
Academic Awards Received 【 display / non-display 】
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Asian BioCeramics Symposium Award
2005.10.02
Winner： Masayuki Fukuda