Japanese Journal of Oral and Maxillofacial Surgery
Online ISSN : 2186-1579
Print ISSN : 0021-5163
ISSN-L : 0021-5163
Volume 63, Issue 3
Displaying 1-6 of 6 articles from this issue
Preface
Original article
  • Toshiro KIBE, Kazuhide NISHIHARA, Takao FUCHIGAMI, Kozo MATSUMOTO, Mas ...
    2017 Volume 63 Issue 3 Pages 140-147
    Published: March 20, 2017
    Released on J-STAGE: May 22, 2017
    JOURNAL FREE ACCESS

    This study analyzed 1,100 patients with primary cleft lip, cleft palate, or both who visited our specialized outpatient department during the 30-year period between 1981 and 2011.

    The results were as follows:

    1 . This study identified 1,100 primary cases of cleft lip, cleft palate, or both among patients attending the outpatient department.

    2 . Of the 1,100 patients, 368 had cleft lip (33.5%), 408 had cleft lip and cleft palate (37.0%), and 324 had cleft palate (29.5%).

    3 . There were 564 male patients and 536 female patients, corresponding to a male-to-female ratio of 1.05:1.

    4 . The age of patients at the first visit was recorded, and we found that 684 patients (62.2%) presented to the department within 1 month of birth.

    5 . The average birth weight of the patients was 2,934.4 g. The birth weight of 400 patients, representing the largest proportion (36.4%), ranged from 2,500 g to 2,999 g.

    6 . A total of 870 patients (79.0%) were living in Kagoshima Prefecture. The proportion of remote island residents in Kagoshima Prefecture was 5.0%.

    7 . The largest proportion of patients was introduced to our department by obstetricians. The second largest proportion of patients was introduced to us by dentists or oral surgeons.

    8 . A total of 122 patients (11.1%) had a congenital anomaly.

    9 . The number of visits, which started in 2006, has increased since 2011. The number of prenatal consultations ranged from 1 to 6 per year. The proportion of patients who sought prenatal consultations was low.

    10. A comparison of the study variables according to the survey period showed that the total number of patients had increased slightly in the intermediate and late periods. The most common abnormality throughout the study was cleft lip and cleft palate. In the early and late periods, there were higher proportions of men than women. In the intermediate period, there was a higher proportion of women. During the early period, less than 50% of patients presenting at the clinic were younger than 1 month. During the intermediate and late periods, 70% of the patients were younger than 1 month at their first outpatient visit. The proportion of low-birth-weight infants (birth weight less than 2,500 g) has gradually increased. High proportions of patients had cleft palate as a congenital malformation in all periods.

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Case reports
  • Moriyoshi NAKAMURA, Yusuke TAKEI, Masayo TAKANO, Akihiro KOBA, Nanae K ...
    2017 Volume 63 Issue 3 Pages 148-152
    Published: March 20, 2017
    Released on J-STAGE: May 22, 2017
    JOURNAL FREE ACCESS

    Sialolipoma is a rare benign tumor arising in the salivary glands. Sialolipoma was first reported by Nagao in 2001. Sixty-eight cases have been reported to date, 38 cases arising in the major salivary glands and 30 cases arising in the minor salivary glands. We report a case of sialolipoma of the soft palate. A 52-year-old woman was referred to our hospital to undergo detailed evaluation of a palatal mass, which was soft and painless. T1 weighted, T2 weighted, and fat-suppressed T2-weighted magnetic resonance imaging revealed an 11 × 10 mm oval swelling in the soft palate. We initially suspected a pleomorphic adenoma of the soft palate. However, after biopsy, the tumor was diagnosed as a sialolipoma. The tumor was excised with the patient under general anesthesia. Histologically, the tumor was surrounded by a capsule of connective tissue, comprising an admixture of mature adipose tissue and salivary gland tissue. There has been no evidence of tumor recurrence after 25 months of postoperative follow-up.

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  • Yasufumi KOSUGI, Toshinori IWAI, Shinsuke OHTA, Senri OGURI, Kenji MIT ...
    2017 Volume 63 Issue 3 Pages 153-157
    Published: March 20, 2017
    Released on J-STAGE: May 22, 2017
    JOURNAL FREE ACCESS

    Sialoliths commonly occur in the submandibular gland, and parotid gland sialoliths are rare. We report the endoscopic removal of a sialolith arising in a parotid gland duct. A 64-year-old woman had swelling in the left buccal region. The patient was referred to our department for endoscopic removal to avoid extraoral removal after a parotid duct sialolith had been diagnosed in other hospital. Computed tomography showed that the left ductal stone measured 3.4 × 2.5 × 2.0 mm. The patient underwent endoscopic removal of the parotid duct sialolith under general anesthesia as minimally invasive surgery. Complete removal was performed, and the postoperative course was uneventful.

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  • Yuji KURIHARA, Masakatsu ITOSE, Reiko TAKIMOTO, Takashi MORIYA, Masahi ...
    2017 Volume 63 Issue 3 Pages 158-162
    Published: March 20, 2017
    Released on J-STAGE: May 22, 2017
    JOURNAL FREE ACCESS

    This case report describes bilateral surgical ciliated cysts that occurred after anterior segmental maxillary osteotomy. A 41-year-old man who had undergone anterior segmental maxillary osteotomy in 1992 was referred to our hospital because of swelling and pain in the left cheek. A panoramic X-ray film and computed tomographic scans showed unilocular and multilocular cystic lesions in the right and left sides of the maxilla; in addition, unilocular cystic lesions including the wisdom tooth crown in the left maxillary tuberosity were seen. The lesions were diagnosed as maxillary cysts and surgically removed with the patient under general anesthesia. Histopathological findings of the walls of the excised cysts revealed that both sides of the premolar region consisted of thick fibrous connective tissue lined with pseudostratified ciliated epithelium. The lesions were diagnosed as surgical ciliated cysts. On the other hand, the wall of the left maxillary tuberosity region consisted of fibrous connective tissue lined with nonkeratinized stratified squamous epithelium. The lesions were diagnosed as dentigerous cysts. The cysts on both sides of the premolar region were located in the osteotomy line of the anterior segmental maxillary osteotomy, suggesting that pseudostratified ciliated epithelium damaged during surgery had migrated from the maxillary sinus into bone pieces and caused the cysts. Long-term follow-up is required after orthognathic surgery of the maxilla to confirm the absence of cysts. The postoperative course was uneventful, and the patient remains free of recurrence 22 months after surgery.

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  • Masayuki TAKAHASHI
    2017 Volume 63 Issue 3 Pages 163-167
    Published: March 20, 2017
    Released on J-STAGE: May 22, 2017
    JOURNAL FREE ACCESS

    The case of a 3-year-old girl with infantile fibromatosis is described. The patient was brought to our hospital by her mother who had noticed swelling of the left mandibular region 2 or 3 months previously. Her past medical and family history was unremarkable. At the first visit, mild swelling was observed in the left mandibular region on extraoral examination, and an intraoral examination revealed a tumor of approximately 2.5 cm in diameter in the mucobuccal fold lateral to teeth Nos. 72, 73, and 74. The mass was elastic-hard and slightly moveable. Magnetic resonance imaging revealed a mass growing outside the mandible. The lesion exhibited mixed signal intensity on T1- and T2-weighted sequences. The clinical diagnosis was a benign tumor. The tumor was removed with the patient under general anesthesia in March 2009. Although the mental nerve was involved by the tumor, it was preserved. A histopathological examination of the lesion revealed the fibroblastic proliferation of slender spindle cells. These features were consistent with a diagnosis of infantile fibromatosis. The lesion recurred 8 months after surgery. Her parents did not agree to extended surgery via an extraoral approach. Re-excision was performed intraorally in November 2011, and the mental nerve was preserved. The patient has been followed up for 4 years 9 months since the last operation, and there has been no evidence of tumor recurrence.

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