This is the third part of a review of the clinicopathologic features of intraosseous carcinoma of the jaws (IOCJ). In parts 1 and 2, we discussed metastatic and salivary-type and odontogenic carcinomas, respectively. This part deals with primary intraosseous squamous cell carcinoma. Again, based on a critical approach, we emphasize histopathologic features, diagnostic difficulties, discuss hist...

Primary de novo intraosseous carcinoma of the jaws has been rarely reported. We present a new case of this unusual tumour and discuss its histopathological and clinical aspects. The subject was a 76-year-old man who was seen due to complaints of pain and the presence of gingival changes in the left mandible. A panoramic radiograph and computed tomography revealed a large mandibular radiolucency...

Intraosseous mucoepidermoid carcinoma is a rare tumor which affects women more than men and is more common in the mandible. The radiological examination reveals a well-defined unilocular or multilocular radiolucent lesion. This tumor may resemble a glandular odontogenic cyst, particularly in incisional biopsies. The accurate diagnosis of these lesions is imperative because the subsequent treatm...

Primary Intraosseous Carcinoma, Not Otherwise Specified (PIOC, NOS) is an extremely rare neoplasm defined as squamous cell carcinoma in the mandible, presumably from residue of odontogenic epithelium. The diagnosis often challenging, and prognosis poor. treatment choice surgical excision but usually declined for cosmetic reasons. A 41-year-old Melanesian woman with a mass her right jaw since tw...

Introduction: Primary intraosseous squamous cell carcinoma (PIOSCC) is a rare malignant lesion arising within the jawbones, without initial connection with the oral mucosa. This malignant lesion develops from odontogenic epithelium or odontogenic cysts or tumors. Case Report: In this case report, an intraosseous squamous cell carcinoma arising from an odontogenic cyst in a 60-year-old male pati...

Adenoid cystic carcinoma (ACC) is an uncommon malignant tumor of the salivary glands. It generally involves the minor salivary glands, and the hard palate is the most common site. ACC presents as a slow growing mass with mild pain and usually demonstrates perinueral invasion. An intraosseous occurrence of ACC is a very rare and when it occurs the mandible is more commonly involved than the maxi...

BACKGROUND Primary intraosseous squamous cell carcinoma is a rare jaw bone tumor defined as squamous cell carcinoma arising within the jaw, having no initial connection with the oral mucosa and developing from residual odontogenic epithelium or from an odontogenic cyst or tumor. Solid type of this tumor arising in the maxilla is an even rarer presentation, because the majorities derive from cys...

Primary de novo intraosseous carcinoma (PIOC) is a rare and unique neoplastic lesion commonly occurring in the jaws. It is locally aggressive with very poor prognosis. Hereby we are presenting a case of proliferative growth from the non-healing extraction socket in a 45 year old female patient with eroded coronoid process and ramus of the mandible radiographically. (Lakshman AR, Kanneppady SK: ...

Acinic cell carcinoma is an uncommon low-grade malignant tumor of salivary glands. It was first described by Nasse in 1892, arising in parotid salivary gland. Salivary gland tumors are also known to develop within jaw bones, arising within the jaw as a primary central lesion, and are extremely rare with only a few cases reported. We present a rare case report of 65-year-old woman with intraosse...

BACKGROUND Hibernoma is a rare benign tumor of adults that is composed of multivacuolated adipocytes resembling brown fat cells. Hibernoma typically occurs in soft tissue, and intraosseous examples are very rare. Intraosseous hibernomas can radiologically mimic metastatic carcinoma and other tumorous conditions. METHODS To collect the intraosseous hibernomas, we searched the pathologic databa...