63186

81312

Head and Neck: The head and neck region includes various structures such as the oral cavity, nasal cavity, pharynx, larynx, and the salivary glands. This region is highly susceptible to carcinomas due to the presence of mucosal surfaces exposed to potential carcinogens. Common types of head and neck carcinomas include:

- Oral Squamous Cell Carcinoma: This is the most common form of head and neck cancer, typically occurring on the tongue, lips, oral cavity, and oropharynx. Risk factors include tobacco use (smoking and smokeless), alcohol consumption, and human papillomavirus (HPV) infection.
- Nasopharyngeal Carcinoma: This cancer arises from the nasopharynx and is often associated with environmental factors such as the Epstein-Barr virus (EBV) infection and dietary habits.
- Laryngeal Carcinoma: Cancer of the larynx (voice box) is often linked to smoking and excessive alcohol intake.

10327

Zonography is a type of panoramography.

50737

Accelerated periodontal diseases is not a complication of irradiation of the mouth.

17236

Daily portable chest x-rays are a routine practice but have not been shown to improve patient outcomes or prognosis compared to interventions like DVT prophylaxis or sedation protocols.

32444

Severe abdominal pain, diarrhea, and hypercalcemia are typical clinical presentations of a gastrinoma.

83593

Cobalt in a cast chromium-cobalt-nickel alloy contribute to strength, rigidity, and hardness

26078

74743

The coronoid process of the mandible is best visualized on PA view of the skull. This view provides a clear frontal projection of the coronoid process without superimposition of other structures. The coronoid process appears as a triangular radiopacity in this projection.

42960

Paroxysmal nocturnal hemoglobinuria is due to an acquired red cell defect, specifically a defect in the cell membrane that makes red blood cells susceptible to lysis.