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The current study indicated that intratumoral vessel invasion and pleural invasion are independent prognostic factors. Intratumoral vessel invasion status can complement the size-dependent TNM staging system in pathologic stage I non-small cell lung cancer.

Our cases confirmed the correlation between the risk categories and the prognosis. A complete resection with sufficient margin must be confirmed even in low-risk cases to prevent local recurrence. Since high-risk patients showed poor prognosis, the adjuvant treatment with chemotherapeutic regimens must therefore be further studied for high-risk patients.

Syringomatous adenoma of the nipple is a rare disease. To our knowledge, only 23 cases have been reported in the literature. We present the case of a 36-year-old lactating woman with syringomatous adenoma of the nipple, in whom local excision of the tumor was performed. Histologically, the tumor consisted of tubules, ductules and epithelial cell strands, and most of the proliferating ducts showed a characteristic teardrop or comma-shaped appearance. Careful monitoring to detect local recurrence is considered necessary, because syringomatous adenoma of the nipple, while being benign, is a locally invasive tumor.

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