Path prac (2)

Histopathology:

Decalcified section in pulp tissue showing dilated B.Vs & extravasated RBCs

Diagnosis:

Hyperemia of the pulp

Describe:

Patient having red mass protruding in the caries cavity in lower 6

Hsitology:

decalcified section showing tooth with large cavity of pulp tissue into pulp cavity , this pulp tissue contain granulation tissue covered by thin layer of epithelium

Diagnosis: Pulp polyp

Patient:

Patient have protruded whitish lesion (sequestrum)

Histo. :

Decalcified section showing bone marrow infiltrated by acute inflammatory cells

Diagnose: Acute Osteomyelitis

Histo :

Decalcified section showing bone marrow rich of chronic inflammatory cells

Diagnose:

Chronic Osteomyelitis

Clinical :

Patient have multiple sinus tracts in chin area

1- Diagnosis : Thyoglossal cyst

2- Describe the clinical picture: Swelling at the midline of the neck

3- Describe the histological picture : Cyst cavity in the posterior part lined by S.S.E & C.T and thyroid follicles in the upper part of slide

1- Describe the gross appearance of the lesion :-

Extracted canine in association with cystic lesion, the cyst attached to the tooth at CEJ

2- Describe the radiograph pic. :-

Unilocular well defined periapical lesion in association with unerupted tooth

3- Describe the histology of pic. :

Cyst cavity lined by non-keratinized epithelium

4- Diagnosis: Dentigerous cyst

Diagnosis : Nevoid basal cell carcinoma ( GorlinSyndrome )

Describe : 1- Multiple basal cell carcinoma

2- well defined radiolucency

3- The histology of odontogenic .. keratocyst

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Clinical Pic :

Cyst associated with erupted upper maxillary

Histology of eruption cyst:

cyst cavity lined by non-keratinized epithelium & C.T

1- Extracted tooth associated with cystic lesion

2- Odontogenic Keratocyst

3- Radiolucent lesion in the posterior part of mandible ( associated with vital tooth ) ,

it may be :

Central intraosseuos tumor

Metastatic tumor,

Odontogenic tumor

Odontogenic keratocyst

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1- Gingival lesion showing nodular mass of the mandibular facial gingiva

2- Cyst cavity lined by epithelium contain : stellate reticulum ( ameloblast like cells ), Ghost cells, calcification area .

C.T rich of inflammatory cells

3- Well defined radiolucent lesion in associated with unerupted tooth

D.D : Gingival fibromas, Gingival cyst, periapicalgiant cell granulomas

Diagnosis : Gorlin cyst

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Clinical presentation:

huge swelling of the jaw

X-ray feature :

multilocular radiolucency, bone destruction is replaced by small well defined radiolucent areas giving rise to the honeycomb or soap-bubble appearance.

Histopathological feature:

long anastomosing cords of epithelium cells bounded by columnar/ cuboidal cells, cells within cords are stellate reticulum like cells.

Identify the case:

plexiform type of ameloblastoma

D.D Radiographically:-

- folliacular type of ameloblastoma.

- plexiform type of ameloblastoma.

- Ameloblastic fibroma

Microscopic variant of the lesion:

it is formed of islands of epithelial follicles with microcyst or multi cyst, the individual follicles show central mass of stellate reticulum like cells surrounded by single peripheral layer of ameloblast- like cells, the nuclei of the peripheral cells have reversed polarity.

Identify the condition:

folliacular type of ameloblastoma.

D.D: Radiographically:-

- pindborg tumor

- AOT ( Adenomatoiod odontogenic tumor )

- Gorlin cyst

- Ameloblastic fibroma

Arrow structure:

round area of concentric calcification deposits ( . liesegang rings ) seen in amyloid material.

Identify the condition:

pindborg tumor

Clinical feature:-

Swelling seen in the posterior mandible

Radiograph describe:

Radiopaque areas surrounded by a radiolucent . rim

Identify the case: Complex odontome

Describe the radiograph:-

Multilocular radiopacity due to large number of denticles ( looks like a bag of teeth

The surgical specimen of the lesion describe it:

Multiple teeth structure

Diagnosis: Compound odontome

Histopathology:

Composed of loose C.T containing little collagen and large amounts of an intercellular substance, so it looks like dental pulp.

Identify the case:

Odontogenic myxoma

Clinical : unilateral swelling of the jaw

X-ray : radiopacity in lower anterior of the jaw showing giantly form cementoma

Asymptomatic swelling at lateral aspect of the neck

Lined by pseudostratified squamous epithelium ,the wall contains lymphoid tissue

Cervical lymphoepithelial Cyst

Abnormal angulation in the root

“Dilaceration”

Enamel in the root surface

“Enamel pearl”

Taurodontism

Large pulp chamber

“Shell teeth”