Parotid Gland Metastases of Cutaneous Squamous Cell Carcinoma of the Head: Occult Metastases Occurrence and Their Late Manifestation.

This difference was highly significant (log-rank test p =0.009), with postoperative therapy reducing the risk of death by 0.293-fold ( p =0.013); see Kaplan–Meier analysis ( Figure 5 , Table 2 ).

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Distribution of Nodal Metastases There was a positive trend suggesting a better survival in patients whose parotid lymph nodes were classified as cN1-2 (according to O'Brien P1-2) compared to cN3 (P3 according to O'Brien) patients ( p =0.173).

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