a = new Array(11); a[0] = "Incorrect" a[1] = "CORRECT. The cysts of Pneumocystis carinii are seen here with the GMS stain." a[2] = "CORRECT. This is a large 'saddle' pulmonary thromboembolus which led to the sudden death. Immobilization favors stasis in large pelvic and deep leg veins that promotes venous thrombosis." a[3] = "CORRECT. The patchy areas of tan consolidation are typical for a bronchopneumonia. Diabetics are prone to infections with bacterial organisms." a[4] = "CORRECT. These large, thick-walled spherules (one of which is rupturing) are indicative of coccidioidomycosis, a dimorphic fungal infection that produces granulomatous disease of the lungs." a[5] = "CORRECT. These are neoplastic cells having a small size, but the nuclei are markedly hyperchromatic and there is scant cytoplasm. The appearance is most characteristic for small cell anaplastic carcinoma of the lung, which is often associated with paraneoplastic syndromes such as SIADH." a[6] = "CORRECT. This is an interstitial, infiltrative process that can have elements of type III hypersensitivity and, if chronic, type IV as seen here with a giant cell. Some environmental antigen elicits the hypersensitivity response." a[7] = "CORRECT. This is a chronic, abscessing pneumonia, which is most often the result in immunocompromised patients from Nocardia or Actinomyces infections." a[8] = "CORRECT. This is 'honeycomb' fibrosis, with thick bands of interstitial fibrosis around residual dilated air spaces. Scleroderma is the most likely autoimmune disease to produce this finding." a[9] = "CORRECT. The localized area of bronchial dilation results from ongoing inflammation with obstruction leading to destruction and dilation of bronchial walls." a[10] = "CORRECT. The non-caseating granulomatous pattern is characteristic of sarcoidosis, but an infectious process must be ruled out." a[11] = "QUESTIONS: 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 "