Central hemangioma of the mandible: report of case.
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Biomedical subjects
Publications and source records attributed to D Karakasis.
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Although the sphenoid sinuses can be identified in sections of the fetus at 4 months, at birth the sinus remains small and is little more than an evagination of the sphenoethmoid recess. After the 3rd year, invasion of the sphenoid bone is more rapid, and by the age of 7, the sinus has extended posteriorly to the level of the sella turcica. By the age of 12, the sphenoid pneumatization reaches its final form and a size equivalent to the adult, although further enlargement into the basisphenoid may occur in the adult. Agenesis of paranasal sinuses is an uncommon clinical sign and refers mainly to the frontal and secondarily to the maxillary sinuses. Agenesis of sphenoid sinuses is a very rare phenomenon in the literature. We present a 32-year-old male patient with agenesis of sphenoid sinuses that was studied by CT.
The development of cartilage cells was investigated in the articular disks of the temporomandibular joint (TMJ disk) from two groups of guinea pigs age 1 month and 2 years old. There is strong evidence that the presence of chondrocytes in the TMJ disks of the older group of guinea pigs is the result of a biological aging phenomenon and is not related to pathologically induced changes.
An extensive hemangioma of the lower face is discussed as an example illustrating the use of therapeutic--particularly preoperative--arterial embolization in the treatment of extensive facial hemangiomas. In this procedure a thrombusinducing material is inserted into the lumen of a blood vessel to occlude this vessel, and thus to reduce blood flow to the lesion. This promising technique opens up new possibilities in the treatment of extensive hemangiomas of the maxillofacial region. It may be used either as a definite therapy or as pretreatment procedure enabling a safer and simpler surgical approach.
The case of a patient with an extensive vertical laceration of the right cheek involving Stensen's duct is reported. Treatment of parotid duct injuries varies with location and type of the injury. Immediate repair of the duct can prevent troublesome and lengthy treatment at a later date, whereas ineffective primary management may lead to complications and render treatment much more difficult.
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The majority of extraoral facial fistulas are of odontogenic origin. Although the differential diagnosis of draining lesions should include various types of skin infection, infected tumour, specific infections, failed wound healing, foreign body, salivary gland fistula, sebaceous cysts and developmental cysts and fistulas. This report documents a group of patients with extraoral draining skin lesions and illustrates that their diagnosis is very important because clinically they can resemble many pathologic entities. One hundred and twenty-eight cases of extraoral fistulas are presented in this paper. This study aims to analyse a number of fistula cases so as to give a clear idea about relative frequency of etiology and to attract to some cases of non odontogenic etiology.
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