中葉無気肺を契機に発見された気管支原発MALT lymphomaの1例

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タイトル別名
  • A Case of Primary Endobronchial Mucosa-associated Lymphoid Tissue Lymphoma with Middle Lobe Atelectasis.

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A 60-year-old woman was admitted for evaluation of an abnormal shadow in her chest X-ray. A chest roentgenogram revealed middle lobe atelectasis and a tomogram showed masses mainly in the right intermediate bronchus. In bronchoscopy, the bronchus was severely narrowed by irregularly surfaced masses. Microscopic examinations of transbronchial biopsy specimen showed the mucosal and submucosal tissue diffusedly infiltrated mainly by lymphocytes composed of small lymphocytes, centrocyte-like cells and monocytoid cells. The B-cell origin was suggested by a positive L-26 stain.<br>Monoclonality of lymphocytes was proven by Southern blot analysis and in situ hybridization. The diagnosis was primary endbronchial lymphoma of mucosa-associated lymphoid tissue. The case was treated with chemotherapy protocol (CAMBO-VIP) and has been in complete remission for 20 months.

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