• Title/Summary/Keyword: Anatomic relationship

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Computed tomographic features of Scottish Fold osteochondrodysplasia

  • Lee, Seyoung;Oh, Juyeon;Choi, Jihye
    • Korean Journal of Veterinary Research
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    • v.60 no.1
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    • pp.43-47
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    • 2020
  • An 18-month-old, Scottish Fold with severe lameness and pain in the fore- and hind-limbs was diagnosed as Scottish Fold osteochondrodysplasia based on radiography showing mis-shapened phalanges, bone formation around the tarsal and metatarsal joints, joint space narrowing, and ankylosis. Although computed tomography (CT) is not considered a primary method for examining Scottish Fold osteochondrodysplasia, CT was undertaken in this case to investigate the cause of pain and reluctant ambulation in the forelimbs. CT showed immaturely ossified bone proliferation in the carpal bones. CT-based multiplanar reconstruction can reveal the anatomic relationship between the bone lesion and the joint in various directions.

Contralateral Submandibular Retropharyngeal Approach for Recurred High Cervical Chordoma

  • Kim, Seok-Won;Shin, Ho
    • Journal of Korean Neurosurgical Society
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    • v.39 no.3
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    • pp.231-233
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    • 2006
  • The C2 level is the transition zone between the cranial and cervical spine. Because of its high position and anatomic relationship to vital structures, exposing C2 is challenging and the surgical approach is controversial. We report a of a recurred chordoma in C2 portion, occupying the osseous intraspinal portion. The patient underwent total corpectomy of C3 and gross total removal of tumor by right submandibular approach 3 years previously. We performed a lateral extrapharyngeal approach from contralateral left side with resection C2 central portion followed by gross total removal of mass and placement of graft bone. Although there was transient hypoglossal nerve palsy postoperatively, the patient had full recovery.

PHYSIOANATOMY OF NASOPHARYNGEAL SPACE AND HYPERNASALITY IN CLEFT PALATE (구개열에서 비인두강의 생리해부학적 구조와 과비음과의 연관성 연구)

  • Cho, Joon-Hui;Pyo, Wha-Young;Choi, Hong-Shik;Choi, Byung-Jai;Son, Heung-Kyu;Sim, Hyun-Sub
    • Journal of the korean academy of Pediatric Dentistry
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    • v.31 no.4
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    • pp.721-728
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    • 2004
  • Velopharyngeal closure is a sphincter mechanism between the activities of the soft palate, lateral pharyngeal wall and the posterior pharyngeal wall, which divides the oral and nasal cavity. It participates in physiological activities such as swallowing, breathing and speech. It is called a velopharyngeal dysfunction when this mechanism malfunctions. The causes of this dysfunction are defects in (1) length, function, posture of the soft palate, (2) depth and width of the nasopharynx and (3) activity of the posterior and lateral pharyngeal wall. The purposes of this study are to analyze the nasopharynx of cleft palate patients using cephalometry and to evaluate the degree of hypernasality using nasometry to find its relationship with velopharyngeal dysfunction. The following results were obtained : 1. In cephalometry, there were significant differences in soft palate length, soft palate thickness, nasopharyngeal depth, nasopharyngeal area, and adequate ratio between two groups. 2. In nasometry, there were significant differences between two groups in vowel /o/ and sentences including oral consonants. 3. In cleft palate patients, though no general correlation was found between Anatomic VPI and nasalance scores, vowel /i/ and sentences including oral consonants were slightly correlated. In conclusion, cephalometry and nasometer results were significantly different between the two groups. Though in the cleft palate group, Anatomic VPI and nasalance scores, which are indices for velopharyngeal closure, excluding the vowel /i/ and sentences including oral consonants show generally no significance.

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Functional MR Imaging Using BOLD Technique in Patients with Brain Tumors (뇌종양 환자에서 BOLD 기법을 이용한 기능적 자기공명영상)

  • Kim Jeong;Yim Nam-Yeol;Shin Sang-Soo;Lim Hyo-Soon;Yoon Woong;Chung Tae-Woong;Jeong Yong-Yeon;Jeong Gwang-Woo;Park Jin-Gyoon;Kang Heoung-Keun;Jung Shin;Kang Sam-Suk;Seo Jeong-Jin
    • Investigative Magnetic Resonance Imaging
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    • v.7 no.2
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    • pp.124-131
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    • 2003
  • Purpose : To reveal clinical usefulness of functional MRI (fMRI) using sensorymotor and language stimuli for demonstrating anatomic relationship between sensorimotor or language cortices and lesions in the planning of brain tumor surgery. Materials and Methods : This study included 12 right-handed patients with brain tumors in or around sensorimotor or language cortices. Eleven patients were evaluated with primary motor and sensory stimuli. Of these patients, six patients were also evaluated with language stimuli. One patient was evaluated with language stimuli only. For fMR imaging, a 1.5T scanner was used and the EPI BOLD technique was employed. For postprocessing image, the SPM99 program and a program made by our department was utilized. We evaluated whether sensorimotor and language stimuli activate sensorimotor and language cortices. And also, clinical efficacy of revealing anatomic relationship between cerebral cortices and lesions for planning neurosurgical operation were evaluated. Finally, we compared post-operative neurologic function with pre-operative neurologic function in same patients. Results : The fMRI examination was successful in identifying the functional cortices and depicting anatomic relationship between functional cortices and lesions in all patients. In nine patients of 11 patients with identified sensorimotor cortices, postoperative grade of manual motor test was not changed, compared with preoperative grade. Whereas postoperative improved than preoperative grade in one patient of remaining two patients, postoperative aggravated than preoperative grade in the other. This result was due to atherosclerotic lacunar infarction, regardless of tumor resection. Postoperative deficit of language function was not found in seven patients with identified language cortices. Conclusion : fMRI could be a helpful method for determining the best approach to neurosurgical treatment in patients with brain tumors in or around sensorimotor or language cortices.

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Anatomical Study of Interdigital Neuroma Occurring Site and the Deep Transverse Metatarsal Ligament (DTML) (지간 신경종 발생 위치와 심부 횡 중족 골간 인대의 해부학적 연구)

  • Kim, J-Young;Choi, Jae-Hyuck;Lee, Kyung-Tai;Young, Ki-Won;Park, Jung-Min
    • Journal of Korean Foot and Ankle Society
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    • v.11 no.2
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    • pp.182-186
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    • 2007
  • Purpose: We examined the relationship of interdigital neuroma occurring site and the surrounding structures, including the deep transverse metatarsal ligament (DTML) by cadaver study and clinical results. Materials and Methods: Seventeen fresh frozen cadavers study were done to evaluate the relationship of interdigital neuroma occuring site and the DTML at two phase of the gait cycle with 60 degree of metatarsophalangeal dorsiflexion and with 15 degrees of ankle dorsiflexion. We measured the distance from interdigital nerve bifurcation of the common digital nerve to anterior margin of the DTML and longitudinal length of DTML itself. Clinically, we checked the location of interdigital neuroma and DTML length during surgery in 32 feet. Results: In the second and third web space, the mean distance from bifurcation of the common digital nerve of foot to the anterior margin of DTML was 16.7 mm, 15.1 mm in the mid-stance position, and 15.9 mm. 14.6 mm in heel-off position. Second, Third web space ligament itself length were average 12.8 mm, 10.6 mm. Clinically, all of the cases of interdigital neuroma started at the bifurcation area of the common digital nerve and interdigital neuroma was average 7.5 mm (range; 6-11 mm). Conclusion: Interdigital neuroma were located more distally than DTML in both the mid-stance and heel off stage. The main lesion was located between metatarsal head and metatarsophalangeal joint and more distal than the DTML anterior margin.

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STUDY ON THE RELATIONSHIP OF THE INFERIOR ALVEOLAR NERVE POSITION BETWEEN BUCCAL AND LINGUAL SIDE USING CT AND ORTHPANTOMOGRAM (컴퓨터단층촬영과 파노라마상을 이용한 한국인 하치조관의 하악에서의 협, 설측 위치 관계에 대한 연구)

  • Shin, Hong-Soo;Hwang, Soon-Jung
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • v.28 no.1
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    • pp.1-6
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    • 2002
  • When bilateral sagittal split ramus osteotomy or mandibular angle reduction are carried out, we have to consider the position of inferior alveolar nerve. For bone splitting or resection using a saw or an osteotome, the bucco-lingual position of the inferior alveolar nerve plays an important role in the preventing perioperative complications such as paresthesia or anesthesia. Because it is rare to find literatures concerning the mean anatomic position of the inferior alveolar nerve in Koreans, we investigated 30 patients who underwent to take CT and orthopantomogram for implant surgery, and evaluated the bucco-lingual position and vertical relationship of the inferior alveolar nerve at the mandible. The results showed that the distance between inferior alveolar nerve and buccal plate was the farthest at mandibular second molar ($7.1{\sim}7.4mm$) and the nearest at mandibular angle area ($4.4{\sim}4.8mm$). But it was no statistical relationship between the bucco-lingual postion of inferior alveolar nerve on the CT and its vertical position on the OPT. In conclusion, the results suggest that a careful surgical procedure is needed at the mandibular angle area to avoid a nerve damage and there are sufficient bone materials at the mandibular second molar are for bilateral sagittal split ramus osteotomy or mandibular angle reduction or plate fixation. And OPT is not usefull for the evaluation of a relative bucco-lingual position of inferior alveolar nerve in relation to its vertical postion on the OPT.

Leiomyosarcoma of the Mandible : Report of a Case (하악골에 발생한 평활근육종)

  • Lee Jean;Heo Min-Suk;Lee Sam-Sun;Choi Soon-Chul;Park Tae-Won
    • Journal of Korean Academy of Oral and Maxillofacial Radiology
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    • v.29 no.2
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    • pp.549-559
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    • 1999
  • Leiomyosarcoma is extremely rare in the oral cavity and especially in the mandible. At first. the case of this report was diagnosed as odontogenic fibroma but after approximately 3.5 years. it was diagnosed as leiomyosarcoma. Conventional radiograph of the first time showed an ill-defined radiolucent lesion in the mandible. After local recurrence. CT images showed a large irregular soft tissue mass with some necrotic areas. These findings were not specific for leiomyosarcoma, but they suggested that this lesion was a recurrent soft tissue sarcoma. Histopathological examinations using H & E staining, immunohistochemical staining and Masson's trichrome staining confirmed this case as leiomyosarcoma. Deciding its malignancy or benignancy, defining the tumor extent and its relationship to the surrounding anatomic structures, and evaluating the distant metastasis are more important roles of radiographic examination than finding out the name of disease.

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A STUDY ON THE RELATIONSHIP OF BETWEEN FACIAL AND ORAL ANATOMIC LANDMARK AND VERTICAL DIMENSION IN KOREAN ADULTS (한국인(韓國人) 안면(顔面) 및 구강내(口腔內) 해부학적(解剖學的) 기준점(基準點) 측정(測定)과 垂直高經(수직고경)과의 관계(關係)에 대한 연구(硏究))

  • Park Sook-Hyun;Heo Seong-Joo;Cho In-Ho
    • The Journal of Korean Academy of Prosthodontics
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    • v.30 no.1
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    • pp.43-54
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    • 1992
  • The purpose of this study was to obtain the guides of establishing vertical dimension by analyzing the facial and oral landmarks of Korean adults. The following conclusions were obtained from this study. 1. The ratio of bizygomatic width to dental arch width was 3.26 : 1 in male and 3.21 : 1 in female, and the ratio of vertical dimension to dental arch length was 2.49 : 1 in male and 2.39 : 1 in female. 2. It was obtained by analysis of multiple regression that the corelative formula, vertical dimension$=23.37+0.24{\times}bizygomatic$ $width+0.29{\times}dental$ arch length. 3. There was no statistically significant difference between the results of vertical dimension acquired by means of Hayakawa's prediction($68.04{\pm}3.16mm$ in male, $64.38{\pm}3.00mm$ in female) and that of vertical dimension by this study.

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Case Report and Literature Review on the Ear Symptom in Patient with TMD (측두하악장애 환자에게서 나타나는 귀증상에 대한 고찰과 임상증례)

  • Kim, Hak-Dong;Hong, Jung-Pyo
    • Journal of Oral Medicine and Pain
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    • v.25 no.2
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    • pp.223-228
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    • 2000
  • The relationship between TMD and otologic symptoms such as tinnitus, vertigo and dizziness has been noted for many years. The existence of otologic symptoms in patients with TMD can be explained by the anatomic proximity and embryologic origin of the structures of the ear and the temporomandibular joint, however the pathogenesis of the symptoms is poorly understood. Serveral hypotheses have been proposed. : Eustachian tube hypothesis, the tensor tympani hypothesis, the otomandibular ligament hypothesis, excessive somatic concern hypothesis. Some investigators have reported that palpation of the deep masseter muscle, sternocleidomastoid muscle or clenching can intensify a patient's tinnitus and in that case, TMD therapy would improve their otologic symptoms. Although tinnitus and vertigo are common symptoms in the general population and also increase with increasing age, those are highly significantly associated with TMD compared with control group. This case report describes the possible mechanism and management of otologic symptoms in patient with TMD who has visited our clinic complaining asymmetric tinnitus and dull pain on her left masseter muscle.

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Differences Regarding the Molecular Features and Gut Microbiota Between Right and Left Colon Cancer

  • Kim, Kwangmin;Castro, Ernes John T.;Shim, Hongjin;Advincula, John Vincent G.;Kim, Young-Wan
    • Annals of Coloproctology
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    • v.34 no.6
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    • pp.280-285
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    • 2018
  • For many years, developmental and physiological differences have been known to exist between anatomic segments of the colorectum. Because of different outcomes, prognoses, and clinical responses to chemotherapy, the distinction between right colon cancer (RCC) and left colon cancer (LCC) has gained attention. Furthermore, variations in the molecular features and gut microbiota between right and LCCs have recently been a hot research topic. CpG island methylator phenotype-high, microsatellite instability-high colorectal cancers are more likely to occur on the right side whereas tumors with chromosomal instability have been detected in approximately 75% of LCC patients and 30% of RCC patients. The mutation rates of oncogenes and tumor suppressor genes also differ between RCC and LCC patients. Biofilm is more abundant in RCC patients than LLC patients, as are Prevotella, Selenomonas, and Peptostreptococcus. Conversely, Fusobacterium, Escherichia/Shigella, and Leptotrichia are more abundant in LCC patients compared to RCC patients. Distinctive characteristics are apparent in terms of molecular features and gut microbiota between right and LCC. However, how or to what extent these differences influence diverging oncologic outcomes remains unclear. Further clinical and translational studies are needed to elucidate the causative relationship between primary tumor location and prognosis.