نتایج جستجو برای: ameloblastic proliferation

تعداد نتایج: 182624  

Journal: :Journal of pediatric surgery 2008
Nona Zabolinejad Mehran Hiradfar Kazem Anvari Alale Shojae Razavi

Ameloblastic fibrosarcoma (AFS) or ameloblastic sarcoma is an extremely rare odontogenic neoplasm. The authors report AFS in the maxillary sinus of a 4-month-old boy. The tumor was composed of odontogenic epithelium, resembling that of ameloblastoma, and a mesenchymal part exhibiting features of fibrosarcoma. We also found some areas with deposition of dentinoid material closely adjacent to the...

Journal: :iranian journal of otorhinolaryngology 0
seyed ali banihashem rad mashhad dental research center, department of periodontology, mashhad university of medical sciences mashhad, iran. hamed mortazavi department of oral medicine, shahid beheshti dental school, shahid beheshti university of medical sciences tehran, iran. majid eshghpour mashhad dental research center, mashhad university of medical sciences, mashhad, iran. jahanshah salehinejad mashhad dental research center, mashhad university of medical sciences, mashhad, iran. reza shahakbari mashhad dental research center, mashhad university of medical sciences, mashhad, iran.

introduction: ameloblastic fibro-odontoma is a rare, benign, asymptomatic tumor. the term ameloblastic fibro-odontoma was first used by hooker in 1967 as a separate lesion from ameloblastic odontoma.   case report: this case report describes an eleven years old female with large ameloblastic fibro-odontoma in the right maxillary sinus.   conclusion: there is a low potential for recurrence after...

Journal: :Romanian journal of morphology and embryology = Revue roumaine de morphologie et embryologie 2012
Adrienne Horváth Emoke Horváth S Popşor

Ameloblastic carcinoma is a rare cause of jaw tumors, especially in children. This rare, rapidly growing, malignant tumor of odontogenic origin affects predominantly the mandible and maxilla. Hypercellularity, lack of differentiation, high mitotic index, vascular and neural invasion are its main histological features. Local destruction and distant metastases to the lungs, bones, liver and brain...

Journal: :Journal 2003
Sylvie Louise Avon John McComb Cameron Clokie

Ameloblastic carcinoma is a rare malignant lesion with characteristic histologic features and behaviour that dictates a more aggressive surgical approach than that of a simple ameloblastoma. However, reliable evidence of its biologic activity is currently unavailable due to the scarcity of well-documented cases. It occurs primarily in the mandible in a wide range of age groups; no sex or race p...

Journal: :Mechanisms of Development 2004
L. M. Calvi H. I. Shin M. C. Knight J. M. Weber M. F. Young A. Giovannetti E. Schipani

Parathyroid hormone (PTH)-related protein (PTH-rP) is an important autocrine/paracrine attenuator of programmed cell differentiation whose expression is restricted to the epithelial layer in tooth development. The PTH/PTHrP receptor (PPR) mRNA in contrast is detected in the dental papilla, suggesting that PTHrP and the PPR may modulate epithelial-mesenchymal interactions. To explore the possibl...

2013
Abhishek Reddy

Ameloblastic carcinoma is an extremely rare, aggressive malignant epithelial odontogenic tumor with characteristic histologic features and behaviour that dictates a more aggressive surgical approach than that of ameloblastoma. However, reliable evidence of its biologic activity is currently unavailable and our understanding of the histologic features of ameloblastic carcinoma is somewhat vague ...

2012
Harshvardhan S. Jois Mohan Kumar K.P. Mandali Satish Kumar Shefali Waghrey

Hemangiomas of the head and neck are considered to be benign tumors of infancy that are characterized by a rapid growth phase with endothelial cell proliferation, followed by gradual involution. Central hemangiomas are a rare occurrence and even rarer are the hybrid tumors of central hemangiomas with odontogenic tumors such as ameloblastomas. This paper reports a case of one such hybrid tumor i...

2016
Mahsa Kalantari Sahand Samieirad Parisa Kalantari

Ameloblastic fibroma is a rare mixed odontogenic tumor mostly occurring in the posterior region of the mandible. The peripheral variant is very rare and to the best of our knowledge, only three cases have been reported in the English literature. In this report, we describe a case of peripheral ameloblastic fibroma in a 54-year-old woman with two years of follow-up.

2013
Ronell Bologna-Molina Sirced Salazar-Rodríguez Ana María Bedoya-Borella Ramón Gil Carreón-Burciaga Gabriel Tapia-Repetto Nelly Molina-Frechero

Ameloblastic fibrodentinoma (AFD) is considered a mixed odontogenic tumor that is characterized by conserved epithelial and ectomesenchymal neoplastic components. AFD is composed of long narrow cords and islands of odontogenic epithelium; the epithelial strands lie in a myxoid cell-rich ectomesenchymal tissue with stellate-shaped fibroblasts that exhibit long slender cytoplasmic extensions that...

2017
Radhika Manoj Bavle Soumya Makarla Reshma Venugopal

Introduction: Odontogenictumours cover a wide and diverse spectrum of tumours. Some odontogenictumours have a varied etiopathogenesis and share a presentation very similar to hybrid odontogenictumours. Ameloblastic fibroodontoma is one such Radhika Manoj Bavle1, Makarla Soumya2, K. Paremala2, Hosthor Sreelatha S.3, M. Sudhakara2, Venugopal Reshma3 Affiliations: 1M.D.S, Professor & Head, Departm...

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