The Experts below are selected from a list of 192 Experts worldwide ranked by ideXlab platform
Deborah Queiroz Freitas - One of the best experts on this subject based on the ideXlab platform.
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brightness and contrast adjustments influence the radiographic detection of soft tissue calcification
Oral Diseases, 2019Co-Authors: Larissa Moreirasouza, Mariane Michels, Larissa Pereira Lagos De Melo, Matheus Lima Oliveira, Luciana Asprino, Deborah Queiroz FreitasAbstract:Objective To assess the influence of subjective enhancement of brightness and contrast of digital panoramic radiographs on the detection of soft tissue calcifications. Materials and methods In this observational study, 500 digital panoramic radiographs were evaluated by two examiners in consensus, who scored the images for the presence of calcifications for each right and left side of the image. After 30 days, all images were revaluated under subjective manipulation of digital brightness and contrast. Calcifications were classified based on the diagnostic hypothesis: sialolith, tonsillolith, calcified atheroma, Phlebolith, rhinolith, maxillary sinus antrolith, synovial chondromatosis, lymph node calcification, stylohyoid ligament, triticeous cartilage, or/and upper horn of thyroid cartilage calcification. For intra-examiner agreement, 20% of the sample was reevaluated. The Kappa test and McNemar test were used (α = 0.05). Results In original images, calcifications were observed in 44.2% of the patients, and in enhanced images, this number was 70.8%. Many calcifications were detected only in enhanced images, mainly in the diagnostic hypotheses of calcified atheroma and stylohyoid ligament. Intra-examiner agreement was excellent for the detection of soft tissue calcifications (0.82) and for the classification (0.81). Conclusion Subjective enhancement of brightness and contrast alters the detection of soft tissue calcifications in digital panoramic radiograph.
Zhongfu Zhao - One of the best experts on this subject based on the ideXlab platform.
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cavernous hemangiomas of the temporalis muscle with prominent formation of Phleboliths case report and review of the literature
Medicine, 2017Co-Authors: Danhui Wang, Guanjun Wang, Peng Cheng, Feng Zhang, Xiaobing Duan, Zhongfu ZhaoAbstract:RATIONALE: Hemangiomas are benign tumors characterized by an abnormal proliferation of blood vessels, most often occur in the skin and subcutaneous tissue, intramuscular hemangioma, a distinctive type of hemangioma within the skeletal muscle, account for <1% of all hemangiomas, temporalis muscle is a very uncommon site, cavernous hemangioma of the temporalis muscle with prominent formation of Phleboliths is rare reported. PATIENT CONCERNS: A 62-year-old man presented with a slowly increased mass in his right temporal fossa. DIAGNOSES: Computed tomography (CT) scan showed the lesion across the zygomatic arch, with many calcified nodules differ in sizes and no erosion to the bone, magnetic resonance imaging (MRI) showed an oval lesion with hypointense and isointense on T2-weighted imaging within the temporal muscle, and preoperation diagnosis was hemangioma. INTERVENTIONS: The tumor was resected under general anesthesia. OUTCOMES: The mass was excised completely, and the histopathology examination confirmed the diagnosis of cavernous hemangioma with prominent formation of Phleboliths. The patient recovered very well without dysfunctions. LESSONS: Cavernous hemangioma should be suspected when mass occurs in this region. CT and MRI are important for the early diagnosis of tumor, and resection the tumor completely is recommended.
David W Eisele - One of the best experts on this subject based on the ideXlab platform.
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submandibular venous malformation Phleboliths mimicking sialolithiasis in children
Laryngoscope, 2014Co-Authors: Zhen Gooi, Wojciech K Mydlarz, David E Tunkel, David W EiseleAbstract:Objectives/Hypothesis Salivary gland stones (sialoliths) are a common cause of salivary gland enlargement, but such stones are uncommon in children. Low-flow vascular malformations of the head and neck region may develop Phleboliths. Phleboliths within a venous malformation may be mistaken for a salivary stone given the similar calcified nature and location. We present two children who were referred to us for evaluation of submandibular gland sialoliths but were found to have venous malformations containing Phleboliths. Multiple calcifications, calcifications > 1 cm, within a soft tissue mass separate from the substance of the submandibular gland suggest a diagnosis, of Phleboliths within a venous malformation as opposed to a sialolith. Laryngoscope, 124:2826–2828, 2014
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vascular malformation masquerading as sialolithiasis and parotid obstruction a case report and review of the literature
Laryngoscope, 2010Co-Authors: Eli R Groppo, Christine M Glastonbury, Lisa A Orloff, Paul E Kraus, David W EiseleAbstract:Introduction Salivary gland obstruction caused by sialolithiasis or duct stricture is one of the more common causes of non-infectious unilateral facial selling. Vascular malformations of the head and neck are less common but may present with intermittent facial swelling. Phleboliths can be found in venous malformations of nearly all adult patients and are a key diagnostic imaging finding. The clinical and radiographic appearance of Phleboliths may resemble sialolithiasis, making the diagnosis more difficult. We present a case of intermittent unilateral facial swelling cause by a venous malformation involving the buccal space where the Phleboliths were initially misdiagnosed as parotid sialolithiasis. Study design Illustrative case report and literature review. Methods A 48 year-old woman presented to our office with 9 months of intermittent left facial swelling. On bimanual examination, multiple small firm nodules were palpated in the left cheek. A computed tomography (CT) scan demonstrated multiple oval-shaped radiopaque lesions in the buccal space, initially interpreted as sialoliths. Magnetic resonance imaging (MRI) was obtained, confirming the diagnosis of venous malformation with Phleboliths. Sialendoscopy revealed a normal appearing parotid duct system without stricture or sialolithiasis. Ultrasound revealed a buccal space vascular lesion surrounding the distal Stensen's duct. Results Currently, the patient is being observed and is clinically stable. Illustrative CT scan and MRI images are presented. A literature review shows that vascular malformations mimicking salivary gland obstruction are rare. Conclusions While unilateral facial swelling is commonly due to parotid sialoliths or parotid duct stenosis, other less common causes including vascular malformation should be considered. Phleboliths and sialoliths may appear similar on ono-contrast CT scan. Ultrasound, MRI, and sialendoscopy may be helpful in determining the etiology.
Larissa Moreirasouza - One of the best experts on this subject based on the ideXlab platform.
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brightness and contrast adjustments influence the radiographic detection of soft tissue calcification
Oral Diseases, 2019Co-Authors: Larissa Moreirasouza, Mariane Michels, Larissa Pereira Lagos De Melo, Matheus Lima Oliveira, Luciana Asprino, Deborah Queiroz FreitasAbstract:Objective To assess the influence of subjective enhancement of brightness and contrast of digital panoramic radiographs on the detection of soft tissue calcifications. Materials and methods In this observational study, 500 digital panoramic radiographs were evaluated by two examiners in consensus, who scored the images for the presence of calcifications for each right and left side of the image. After 30 days, all images were revaluated under subjective manipulation of digital brightness and contrast. Calcifications were classified based on the diagnostic hypothesis: sialolith, tonsillolith, calcified atheroma, Phlebolith, rhinolith, maxillary sinus antrolith, synovial chondromatosis, lymph node calcification, stylohyoid ligament, triticeous cartilage, or/and upper horn of thyroid cartilage calcification. For intra-examiner agreement, 20% of the sample was reevaluated. The Kappa test and McNemar test were used (α = 0.05). Results In original images, calcifications were observed in 44.2% of the patients, and in enhanced images, this number was 70.8%. Many calcifications were detected only in enhanced images, mainly in the diagnostic hypotheses of calcified atheroma and stylohyoid ligament. Intra-examiner agreement was excellent for the detection of soft tissue calcifications (0.82) and for the classification (0.81). Conclusion Subjective enhancement of brightness and contrast alters the detection of soft tissue calcifications in digital panoramic radiograph.
Danhui Wang - One of the best experts on this subject based on the ideXlab platform.
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cavernous hemangiomas of the temporalis muscle with prominent formation of Phleboliths case report and review of the literature
Medicine, 2017Co-Authors: Danhui Wang, Guanjun Wang, Peng Cheng, Feng Zhang, Xiaobing Duan, Zhongfu ZhaoAbstract:RATIONALE: Hemangiomas are benign tumors characterized by an abnormal proliferation of blood vessels, most often occur in the skin and subcutaneous tissue, intramuscular hemangioma, a distinctive type of hemangioma within the skeletal muscle, account for <1% of all hemangiomas, temporalis muscle is a very uncommon site, cavernous hemangioma of the temporalis muscle with prominent formation of Phleboliths is rare reported. PATIENT CONCERNS: A 62-year-old man presented with a slowly increased mass in his right temporal fossa. DIAGNOSES: Computed tomography (CT) scan showed the lesion across the zygomatic arch, with many calcified nodules differ in sizes and no erosion to the bone, magnetic resonance imaging (MRI) showed an oval lesion with hypointense and isointense on T2-weighted imaging within the temporal muscle, and preoperation diagnosis was hemangioma. INTERVENTIONS: The tumor was resected under general anesthesia. OUTCOMES: The mass was excised completely, and the histopathology examination confirmed the diagnosis of cavernous hemangioma with prominent formation of Phleboliths. The patient recovered very well without dysfunctions. LESSONS: Cavernous hemangioma should be suspected when mass occurs in this region. CT and MRI are important for the early diagnosis of tumor, and resection the tumor completely is recommended.