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. 2012 Sep 5;36(12):2865–2871. doi: 10.1007/s00268-012-1743-5

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© The Author(s) 2012

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Fig. 1 — Lymph node spread patterns according to the primary tumor location: a tumors of the right upper lobe (RUL) and right upper mediastinal metastasis. b Tumors of the right lower lobe (RLL) and right upper mediastinal metastasis. c Tumors of RUL and subcarinal metastasis. d Tumors of RLL and subcarinal metastasis. e Tumors of the left upper division (LUD) and left upper mediastinal metastasis. f Tumors of the left lingular division (LLD) and left upper mediastinal metastasis. g Tumors of the left lower lobe (LLL) and left upper mediastinal metastasis. h Tumors of LUD and subcarinal metastasis. i Tumors of LLD and subcarinal metastasis. j Tumors of LLL and subcarinal metastasis