PMC5757586_01
(A, B) Chest X-ray and computed tomography (CT) showed an abnormal shadow, like a needle, in the right lower lung (A, red dotted circle; B, red arrow). (C, D) Chest X-ray and CT showed several nodules were located on the same place in right lower lung (C, red dotted circle; D, red triangle) along the pathway where the needle had been inserted (D, translucent red line). The yellow arrow shows the scar of the lung incision during surgery to remove the foreign body. (E) A foreign body, like a broken needle, was detected in the right lower lobe (yellow circle) when removal of the foreign body was performed. (F) The specimen comprised an approximately 10-mm broken needle with granulations.
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Chest X-ray and computed tomography (CT) showed that a foreign body was present in the right lower lung (Fig. 1A, B). Removal of the foreign body was performed, and the specimen comprised an approximately 10-mm broken needle with granulations (Fig. 1E, F). Nine years later, the patient was admitted to our department with a nodule shadow on chest X-ray after a health check-up (Fig. 1C). A chest CT showed several nodules located in the same place in right lower lung along the pathway where the needle had been inserted (Fig. 1D).
(A) The resected specimen from the operation indicated small nodules and white necrotic region. (B, C) H&E staining for the resected specimen revealed caseous necrosis with some multinucleated giant cells.
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The resected specimen included some small nodules and a white necrotic region (Fig. 2A). Histopathological examination of the resected specimen revealed caseous necrosis with some multinucleated giant cells. (Fig. 2B, C) Although no bacteria were found by microscopic examination of a direct smear, M. avium was cultured.