To the Editor.
—We have continued to be impressed with the diverse clinical syndromes with which Mycoplasma pneumoniae infection may be associated.1 The following case depicts an unusual presentation for M pneumoniae pneumonia.Three weeks before admission to the hospital, a 40-year-old woman had six teeth extracted under general anesthesia without complication. Several days later, fever, chills, and cough developed. For five days she received ampicillin trihydrate, with no response. Over the next week, her sputum became grossly purulent and a temperature of 40 °C persisted. Tetracycline hydrochloride was given for two days. However, fever continued and pleuritic chest pain developed, so the patient was admitted to the hospital.She appeared acutely ill and complained of pain in the right side of the chest. Her temperature was still 40 °C, and there was a pleural friction rub. Laboratory data showed the following values: WBCs, 30,300/cu mm (80 polymorphonuclear leukocytes,