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  • Title: Lymphangiomatosis involving the pulmonary and extrapulmonary lymph nodes and surrounding soft tissue: A rare case report.
    Author: Fang X, Huang Z, Zeng Y, Zhu X, Wang S, Yu X, Li X, Wu C, Yi X.
    Journal: Medicine (Baltimore); 2017 Dec; 96(49):e9032. PubMed ID: 29245295.
    Abstract:
    BACKGROUND: Diffuse pulmonary lymphangiomatosis (DPL) mainly affects the lung and pleura. There are very few pathological reports of lung damage accompanied by diffuse involvement of the extrapulmonary lymph nodes and surrounding soft tissue. The clinicopathological significance of coexistence of pulmonary and extrapulmonary lesions is unknown. METHODS: Here, we report a 16-year-old male patient. The pathological specimens of the supraclavicular lymph node and soft tissue together with the lung biopsy were analyzed by pathological observation and immunohistochemical staining. Literatures were reviewed and clinical and imaging findings were discussed. RESULTS: The patient presented with coughing and expectoration for 1 year and intermittent hemoptysis for 4 months. Ultrasound revealed swollen lymph nodes in bilateral neck, left armpit, and pubic symphysis. Chest CT scan showed diffuse grid and linear shadows, bilateral pleural thickening, and nodule formation. Multiple enlarged lymph nodes were mainly investigated in bilateral hilar, mediastinal, para-aortic, lesser curvature, and retroperitoneal. Supraclavicular lymph node biopsy confirmed the lymphatic hyperplasia and expansion in the capsule and surrounding soft tissue. The thoracoscopic examination found bloody chylothorax on the left chest. And lung biopsy showed the lymphatic vessel hyperplasia and expansion on the pleura and adjacent lung tissue. Immunohistochemical stains showed that the lymphatic endothelial cells were positive for D2-40 and CD31. Lymphangiomatosis involving the pulmonary and extrapulmonary lymph nodes and surrounding soft tissue was diagnosed based on the aforementioned histological findings. CONCLUSION: Lymphangiomatosis of superficial lymph node mainly involves the capsule of lymph nodes and its surrounding soft tissue. The information obtained from the lymph node biopsy can prompt and assist the diagnosis of DPL.
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