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A case of rheumateid arthritis (RA) with pernicious anemia (PA) and wandering multiple patchy densities in bilateral lung fields is reported. A 72-year-old woman was hospitalized in February 1994, because of cough. She had already advanced RA (Class IV, Stage IV). She showed macrocytic and hyperchromic anemia as follows ; red-cell count (RBC), 176 x 10(4)/microliters; hemoglobin (Hb),7.2 g/dl; hematocrit (Ht), 21.0% ; MCV, 119.3 fl; and MCH, 40.9 pg. Chest roentgenogram revealed multiple patchy densities in bilateral lung fields and there was no response to the administration of antibiotic agents. From these clinical pictures bronchiolitis obliterans organizing pneumonia (BOOP) was highly suspected. After steroid injection into the joint space, the abnormal lung shadows disappeared. Anemia had been recovering spontaneously, but recurred in July. The results of blood examination were as follows ; RBC, 162 x 10(4)/microliters; Hb, 6.7ng/dl; Ht, 19.1%; MCV, 117.9 fl; and MCH, 41.4 pg. Anti-intrinsic factor antibody was positive. The level of serum vitamin B12 was low, 76 pg/ml. Sternal bone marrow aspiration showed magaloblastic changes with hypersegmentation of granulocytes. PA was diagnosed and improvement was noted after the intramuscular administration of vitamin B12. Subjective symptoms based on RA did not change during the clinical course. It is suggested that the pathogenesis about the combination of RA, BOOP and PA is related to common immunological abnormalities in our patient. A case of RA with PA and BOOP has not been reported previously, thus this case is considered clinically valuable.
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