MH Ali, ME Zayed, Necrotizing Fasciitis of the Head and Neck: Report of Three Cases. 1997; 17(6): 641-645 Necrotizing fasciitis (NF) is a rare but life-threatening multimicrobial soft tissue infection characterized by progressive, usually rapid, necrotizing process of the subcutaneous tissues and fascial planes, with resulting skin gangrene and systemic toxicity.1-6 The condition, commonly described in the extremities, abdominal wall and perineum, is rarely seen in the head and neck. 1,7 Because of the fulminant course of NF, early diagnosis is imperative. Broad spectrum antibiotics, aggressive surgical treatment and supportive therapy are the cornerstones of successful treatment. [5][6][7] The diagnosis of NF depends mainly on clinical features which are not always obvious, while a high index of suspicion is needed. Unfortunately, the disease is often diagnosed late in its course, resulting in high mortality. 6,8 We describe three cases of necrotizing fasciitis of the head and neck, arising from different origins with different courses and outcomes. To the best of our knowledge, there are no previous reported cases from Saudi Arabia.
Case 1A 34-year-old insulin-dependent diabetic female patient presented to the emergency room complaining of right mandibular dental pain, associated with a tender right-sided neck swelling. The past medical history was significant for a positive serologic test for hepatitis B and a long-standing right heel ulcer. She was oriented and alert. The head and neck examination showed a diffuse, tender, nonfluctuant swelling of the right submandibular area. Oral examination revealed a painful carious right second mandibular molar. The rest of the examination was essentially normal. The vital signs were as follows: temperature 37.5°C, pulse rate 86 beats/min, blood pressure 110/70 mm Hg and respiratory rate 20/min. The abnormal blood tests were leucocytosis of 18,100/μL and glucose of 15.1 mm/L (271.8 mg/100 mL). Panoramic orthopantomogram revealed a radiolucency at the root of the right mandibular second molar. The patient was admitted to the ENT service with diagnosis of a right submandibular space abscess secondary to dental infection. However, needle aspiration and ultrasonography of the involved area were negative. The patient was started on intravenous antibiotics (metronidazol 500 mg tid, gentamycin 80 mg tid and Velosef 1 g qid). Blood glucose was controlled on subcutaneous insulin according to a sliding scale. On the second day of admission, the carious molar was extracted under local anesthesia. The patient's condition deteriorated over the next two days. The temperature and the leucocytic count increased to 40.2°C and 64,700/μL respectively. Subsequently, the patient developed breathing difficulty. The swelling was spreading to involve the neck regions bilaterally with severe tenderness and crepitation. On the fifth day of admission, the right submandibular area was explored through a transverse incision under general anesthesia. A foul-smelling brownish fluid was found. A sa...