Calcifying epithelial odontogenic tumor: two cases report / 华西口腔医学杂志

Calcifying epithelial odontogenic tumor (CEOT) is a rare benign epithelial tumor of odontogenic origin. CEOT is a benign but a locally infiltrative tumor. CEOT has two clinical variants: intraosseous (central) CEOT and extraosseous (peripheral) CEOT. The peripheral type is rare. In this paper, we report two cases of CEOT. The diagnoses of the cases were verified by histopathology. This study aims to explore the clinical and imaging appearances of CEOT and improve the understanding of the disease.

Keratocystic odontogenic tumor with malignant transformation: a case report / 华西口腔医学杂志

The keratocystic odontogenic tumor (KCOT) is a common cystic lesions of jaw, which has a high recurrence rate but rarely undergo malignant transformation. This study reported a patient with primary intraosseous squamous cell carcinoma developed from KCOT.

Analysis of clinical and imaging findings in cementoblastoma / 华西口腔医学杂志

<p><b>OBJECTIVE</b>To assess the clinical and imaging features of cementoblastoma for diagnosis and differential diagnosis.</p><p><b>METHODS</b>Clinical and imaging data of 14 cases were selected for this retrospective study.</p><p><b>RESULTS</b>A total of 14 cases of cementoblastoma patients with ages at diagnosis ranging from 11 years to 58 years (mean age, 27.6 years; median age, 21.0 years). The tumor affected 7 patients from each gender. The mandible was the main site of occurrence. The most common complaints were swelling and pain. Radiographic results showed that cementoblastoma typically presented as a well-circumscribed and radiopaque mass confluent with the involved tooth root and surrounded by a thin and uniform radio-lucent border. Tumor parenchyma was generally mixed-density, which could be divided into two types, namely, homogeneous and heterogeneous patterns. Other significant imaging features included the periphery bone of the lesion sclerosis and cortical thickening of the lower edge of the mandible.</p><p><b>CONCLUSION</b>Obvious characteristics are found in the clinical and imaging findings of cementoblastoma. Accurate recognition of this lesion is significant in clinic to avoid misdiagnoses.</p>

Cone-beam CT features of ameloblastomas / 华西口腔医学杂志

<p><b>OBJECTIVE</b>To summarize and analyze the cone-beam CT (CBCT) imaging features of ameloblastomas for clinical preoperative diagnosis.</p><p><b>METHODS</b>Thirty-seven cases with complete data proven by pathology were retrospectively studied for distinct CBCT features.</p><p><b>RESULTS</b>Of the 37 cases, 31 were primary and 6 were recurrent. On CBCT images, the 37 cases were composed of 36 cases (97.3%) of intraosseous lesions (17 cases of multilocular lesions, 17 cases of unilocular lesions, and 2 cases of honeycomb lesion) and 1 case (2.7%) of extraosseous lesion (soft tissue lesion). Of the 17 multilocular cases, 15 (88.2%) showed tongue-shaped crests in lesions. Thirty-four cases (94.4%) showed apparent expansible change toward lip/buccal and (or) palatal/lingual sides ofjaw, with partialcortical erosion.</p><p><b>CONCLUSION</b>CBCT imaging yields accurate three-dimensional images of lesion shape and structure. Therefore, CBCT can be usedfor the clinical diagnosis and surgical assessment of ameloblastoma.</p>

Cone beam CT radiographic diagnosis of submandibular radiopaque sialolithiasis / 华西口腔医学杂志

<p><b>OBJECTIVE</b>To investigate the radiographic features of submandibular sialiths in cone beam CT (CBCT) images.</p><p><b>METHODS</b>Eighty-four patients with submandibular radiopaque sialiths were included in this study. The clinical features of gender and age and the radiographic features on CBCT, including the number, morphology, size, and location, were recorded for further statistical analysis.</p><p><b>RESULTS</b>A total of 128 sialiths were detected from the 84 subjects; 22 subjects (26.19%) had multiple sialiths. The morphology of the sialiths was classified into five types: spot, round, spheroid, elongated, and irregular shapes. Among these types, the spheroid shape was the most frequently detected. A correlation was observed between the size of the sialiths and their location, with the large sialith located at the posterior portion of the duct. About 39.06% (50/128) of sialiths was located at the anterior portion of the duct, and 60.94% (78/128) was located at the posterior portion. The horizon- tal position of the sialith was significantly correlated with its vertical position (P < 0.0001).</p><p><b>CONCLUSION</b>The CBCT images showed important data for the evaluation, diagnosis, and treatment plan of the submandibular sialolithiasis.</p>

Analysis of imaging findings in jaw bone islands / 华西口腔医学杂志

<p><b>OBJECTIVE</b>To provide reference data on frequency and distribution of bone islands (BIs) and investigate their relationship with age, gender, and localization.</p><p><b>METHODS</b>A population who received a pretreatment and at least one follow-up panoramic radiograph in the Department of Oral Radiology, West China Hospital of Stomatology, Sichuan University, were selected for this retrospective study. A sample population of 29,556 patients (12,824 males and 16,732 females) with different dental complaints and ages ranging from 8 to 80 years (mean age: 23.95 years) were included.</p><p><b>RESULTS</b>In the radiographic evaluation, BIs appeared as localized, well-defined, non-expansile, radiopaque masses which were round, elliptic, or irregular in shape. Their sizes varied from a few millimeters to about 2 cm in diameter. A total of 598 radiopacities were detected, and 545 patients of 29,556 patients (1.84%) had BIs. Among subjects with multiple lesions, 49 patients had 2 BIs and 2 patients had 3 BIs. The BIs had immense mandibular predilection, with presentation primarily in the premolar/molar region. The condition appeared to have no tendencies based on sex.</p><p><b>CONCLUSION</b>Recognition of BIs variation is significant in dental examinations.</p>