Japanese Journal of Oral and Maxillofacial Surgery
Online ISSN : 2186-1579
Print ISSN : 0021-5163
ISSN-L : 0021-5163
Volume 60, Issue 10
Displaying 1-8 of 8 articles from this issue
Preface
Case reports
  • Koroku KATO, Maho MIYAZAKI, Akira TANAKA, Kan YOSHIDA, Shuichi KAWASHI ...
    2014 Volume 60 Issue 10 Pages 556-560
    Published: October 20, 2014
    Released on J-STAGE: July 17, 2015
    JOURNAL FREE ACCESS
    Simple bone cysts rarely occur in the mandibular ramus and are extremely rare in early childhood. We report a recurrent case of a simple bone cyst in an infant. A 4-year-old boy was referred to our department because of swelling of the left cheek. A clinical examination confirmed left cheek swelling and bone expansion of the mandibular ramus. Radiographs showed a large radiolucent, monolocular lesion in the left mandibular ramus, and thinning and bulging of the buccal cortical bone was confirmed. A clinical diagnosis of mandibular cyst was made. Surgical treatment was carried out and revealed serious fluid with no cyst wall in the bone cavity. Alternatively, we diagnosed the lesion as a simple bone cyst. Although radiographic follow-up indicated new bone regeneration, the cystic lesion recurred 4 years 3 months after surgery. Surgical treatment was performed again, and the pathological diagnosis was a simple bone cyst. The mandible showed osseous healing, and there was no recurrence 2 years after the second operation.
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  • Naoki TAKATA, Yasuyuki SHIBUYA, Takumi HASEGAWA, Akira KIMOTO, Hiroaki ...
    2014 Volume 60 Issue 10 Pages 561-565
    Published: October 20, 2014
    Released on J-STAGE: July 17, 2015
    JOURNAL FREE ACCESS
    Cystadenocarcinoma is an uncommon salivary gland tumor that occurs in the palate. We report a rare case of cystadenocarcinoma arising in the palate. A 80-year-old man visited a certain hospital because of a painless swelling in the palate. A biopsy was performed, and adenocarcinoma was diagnosed histopathologically. He was therefore referred to our hospital to receive treatment for adenocarcinoma. He had a painless swelling, measuring 25 × 15 mm, in the left side of the palate. Computed tomography showed no evidence of cervical metastasis. Partial maxillectomy was performed, and the final histopathological diagnosis was cystadenocarcinoma. There was no evidence of recurrence or metastasis 20 months after the operation.
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  • Hideaki SATO, Akira TANAKA, Jun UEDA, Aya NAKAGAWA, Kaname SAKUMA, Yos ...
    2014 Volume 60 Issue 10 Pages 566-570
    Published: October 20, 2014
    Released on J-STAGE: July 17, 2015
    JOURNAL FREE ACCESS
    Thromboxane A2 (TXA2) causes vasoconstriction and activation of platelets and is an important transmission material for the expression of platelet-releasing reactions and secondary platelet aggregation. Congenital platelet TXA2 receptor abnormality is a congenital dysfunction of platelets in which there is a deficit in the aggregation and release responses' caused by a qualitative abnormality of thromboxane receptors on the platelet membrane surface. We describe our experience in which extensive extravasation was observed in the face of a 50-year-old woman following an apicoectomy of a maxillary front tooth. After a careful examination, she was given a diagnosis of congenital platelet TXA2 receptor abnormality.
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  • Homare KAWACHI, Shuichi NISHIKUBO, Yuichiro KIMURA, Nobuo TAKANO, Taka ...
    2014 Volume 60 Issue 10 Pages 571-576
    Published: October 20, 2014
    Released on J-STAGE: July 17, 2015
    JOURNAL FREE ACCESS
    Arteriovenous malformation (AVM) refers to abnormal arteriovenous anastomoses with vascular morphological changes. We report a case of high-flow-type AVM that we successfully treated in collaboration with the Neurosurgery Department. The patient was a 24-year-old man. At the age of 13 years, he noticed a swelling in the right submandibular region. At the age of 18 years, he noticed that the swelling had enlarged and consulted our hospital’s Neurosurgery Department. He was given a diagnosis of high-flow-type AVM and underwent endovascular embolization twice. Later, the swelling started to enlarge again, and the patient was referred to our department for surgery. Initial examination revealed a normal-colored, pulsatile, right submandibular mass with a 130-mm major axis. Computed tomography showed an AVM extending from the right submandibular region to the mandible, up to the middle of the base of the skull. Endovascular coil embolization was performed at the Neurosurgery Department. Extirpation of the AVM, right hemimandibulectomy, and immediate reconstruction with a titanium plate were performed with the patient under general anesthesia. Two weeks after surgery, the patient was capable of oral ingestion, had a good overall condition, and was discharged. It is important that the treatment of AVMs depends on their classification and stage. Accurate diagnosis allows a high rate of curative treatment.
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  • Atsushi FUJITA, Kohei MATSUDA, Wataru KAKUGUCHI, Masaki DONEN, Toyonor ...
    2014 Volume 60 Issue 10 Pages 577-580
    Published: October 20, 2014
    Released on J-STAGE: July 17, 2015
    JOURNAL FREE ACCESS
    We describe the extraction of two impacted teeth adjacent to the inferior alveolar neurovascular bundle, with preoperative simulation using a full-color 3-dimensional salt model. A 51-year-old man was referred to our hospital because of pain in the premolar region of the mandible, where pus discharge was recognized and the crown of an impacted tooth was exposed. A panoramic radiograph showed two impacted teeth in the region. Computed tomographic (CT) images showed that the inferior alveolar neurovascular bundle was situated between the roots of the two impacted teeth. A full-color 3-dimensional salt model was constructed based on the CT data, and preoperative simulation was performed to avoid injury to the inferior alveolar neurovascular bundle. Thereafter, the two impacted teeth were extracted in the same way as preoperative simulation. There was no sign of pathological fracture or paresthesia 5 months after surgery.
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  • Hirokazu TANAKA, Hideki MIYAZAWA, Kiyonori HAYASHI, Toshikazu MINEMURA ...
    2014 Volume 60 Issue 10 Pages 581-586
    Published: October 20, 2014
    Released on J-STAGE: July 17, 2015
    JOURNAL FREE ACCESS
    The number of patients attacked by bears has been rising recently because the opportunity to encounter wild bears has increased. Bear attacks usually focus on the head and neck areas, and the attack sometimes causes fatal injuries.
    We report two cases of multiple facial lacerations and mandibular bone comminuted fractures caused by a bear attack.
    A 70-year-old man and a 60-year-old man were attacked by a black bear while mushroom picking. They sustained mandibular bone comminuted fractures with deep lacerations of the face. They were brought to our emergency room. Their lives were saved by immediate surgery. In addition, it was necessary to provide preventative measures against infection.
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  • Junko ANRAKU, Akihiko IIDA, Makoto OHNISHI, Katsuya SAKURAI, Keita TAN ...
    2014 Volume 60 Issue 10 Pages 587-591
    Published: October 20, 2014
    Released on J-STAGE: July 17, 2015
    JOURNAL FREE ACCESS
    Epidermoid cysts measuring up to 3 cm in diameter account for more than 80% of all epidermoid cysts. Large epidermoid cysts are often accompanied by oral dysfunction. We report the case of a 60-year-old man with a large sublingual epidermoid cyst accompanied by articulatory disorder and sleep apnea. The patient presented with a chief complaint of swelling extending from the floor of the oral cavity to the submental region. On examination, a soft, well-circumscribed mass was observed. Computed tomography and magnetic resonance imaging revealed expansion into the sublingual space. The tongue was displaced backward, and the airway was narrowed. An articulatory disorder was revealed by a speech test, and severe sleep apnea was detected on polysomnography (apnea hypopnea index, 45.8). An epidermoid or dermoid cyst was diagnosed on the basis of turbid fluid contents obtained by puncture. The mass was surgically resected, and histopathological examination confirmed an epidermoid cyst. A postoperative speech test and polysomnography revealed significant improvement. The findings from this case suggest that dysfunction should be considered in patients presenting with a large mass bulging outward in the oral cavity, even if the patient is asymptomatic.
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