Mucoepidermoid carcinoma staging

Mucoepidermoid carcinoma Microchapters
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Maria Fernanda Villarreal, M.D. [2]

Overview

According to the AJJC 7th edition, there are 6 stages of mucoepidermoid carcinoma based on the tumor size and node invasion. Each stage is assigned a letter and a number that designate the tumoral size and node invasion.

Staging

AJCC 7th Edition

Tumor

• T1 - 2cm or less w/o extraparenchymal extension
• T2 - >2cm but not greater than 4cm; and w/o extraparenchymal extension
• T3 - >4cm or with extraparenchymal extension
• T4a - invades skin, mandible, ear canal or facial nerve
• T4b - invades skull base, pterygoid plates or encases carotid

Nodes

• NX - Cannot be assessed
• N0 - No regional lymph nodes metastasis
• N1 - Single ipsilateral lymph node, <= 3cm in greatest dimension
• N2
• N2a - Single ipsilateral lymph node, 3-6 cm in greatest dimension
• N2b - Multiple ipsilateral lymph nodes, <= 6cm in greatest dimension
• N2c - Bilateral or contralateral lymph nodes, <= 6cm in greatest dimension
• N3 - Lymph node(s) >6 cm in greatest dimension

Overall stage

• I - T1 N0
• II - T2 N0
• III - T3 N0-1, or T1-3 N1 (i.e. T3 or N1)
• IVA - T4a N0-2, or T1-4a N2 (i.e. T4a or N2)
• IVB - T4b N0-3, or T1-4b N3 (i.e. T4b or N3)
• IVC - M1