What are Liesegang rings in CEOT?

What are Liesegang rings in CEOT?

The tumor cells have distinct cytoplasmic borders and prominent intercellular bridges. Large areas of amyloid or amyloid-like material are usually present. Calcifications develop within these amyloid-like areas and can form concentric rings known as Liesegang rings.

What is AOT in radiography?

AOT is classified as a mixed odontogenic neoplasm which is an Epithelial tumor with an inductive effect on the odontogenic ectomesenchyme. Age incidence of AOT: Seen in Younger patients 10-30 years of age. Radiographic Features of AOT: Well circumscribed unilocular radiolucency.

What is a Keratocyst?

Odontogenic keratocyst (OKC) is the cyst arising from the cell rests of dental lamina. It can occur anywhere in the jaw, but commonly seen in the posterior part of the mandible. Radiographically, most OKCs are unilocular when presented at the periapex and can be mistaken for radicular or lateral periodontal cyst.

How do Liesegang rings form?

Liesegang rings may form from the chemical segregation of iron oxides and other minerals during weathering.

What is odontogenic myxoma?

Odontogenic myxoma is a rare benign tumour of the jaw and characteristically presents as a slow, painless, bony expansion with resultant facial deformity. It is most commonly associated with an unerupted tooth and probably arises from the mesenchymal portion of the tooth germ [1]. According to a study by Regezi et al.

Why CEOT is called Pindborg tumor?

Introduction. Calcifying epithelial odontogenic tumor (CEOT) is an odontogenic tumor arising from the odontogenic epithelium. [1] It was first described in 1956 by the Late Dr. Jens J Pindborg. Hence, CEOT is also called Pindborg tumor.

Is tooth vital in Cementoblastoma?

But may be associated with diffuse pain and tooth mobility, but the tooth is still vital. Since a cementoblastoma is a benign neoplasm, it grossly forms a mass of cementum-like tissue as an irregular or round mass attached to the roots of a tooth, usually the permanent mandibular first molar.

What is an Odontome?

Odontomas are slow-growing, asymptomatic neoplasms found in jaws. In about 80% of cases, they are associated with impacted or unerupted teeth. Radiographically, odontomas present as a well-circumscribed radiolucency resembling a dental follicle or dentigerous cyst. Rarely, an odontoma may erupt into the oral cavity.

Why OKC is called cyst?

OKC is the one of the rare odontogenic cysts, which attracts many researchers due to its unique characteristics. OKC originates from the dental lamina remnants in the mandible and maxilla before odontogenesis is complete. It may also originate from the basal cells of overlying epithelium.

Are odontogenic Keratocysts painful?

Clinically, odontogenic keratocysts (OKCs) generally present as a swelling, with or without pain. The cyst classically grows within the medullary spaces of the bone in an anteroposterior direction, causing expansion that is at first minimal.

Where can I find histology and pathology virtual slides?

The University of Virginia has a database of histology and pathology Virtual Slides housed within the School of Medicine’s Multimedia Database (MMDB). To find Virtual Slides on a particular topic:

What is the Department of histopathology?

INTRODUCTION TO DEPARTMENT OF HISTOPATHOLOGY Histopathology is the department of clinical lab which deals with the study of diff types of tissues The department is based on following benches:  Processing  Gross  Tissue processing  Embedding,cutting,H&E  Immunohistochemistry  Special stains  Cytology  Semen DR  Cytogenetics 3.

What is the difference between histopathology and histology?

Greek word Histo- tissue Pathos- disease suffering  refers to the microscopic examination of tissue in order to study the manifestations of disease.  histopathology refers to the examination of a biopsy or surgical specimen by a pathologist,  after the specimen has been processed and histological sections have been placed onto glass slides 4.

What is the classical AOT phenotype of IHC?

IHC  Classical AOT phenotype is characterized by a cytokeratin (CK) profile similar-follicular cyst and/or oral or gingival epithelium +ve • CK5 • CK17 • CK19 -ve • CK4 • CK10 • CK13 • CK18 18. Differential diagnosis  1. Dentigerous cyst  2.