Table 5 Pathologic characteristics of the study tissues.

From: Validation of Reference Genes for Normalization of Relative qRT-PCR Studies in Papillary Thyroid Carcinoma

Parameter

PTC

PNT

MNG

Total

Tissue number

15

15

15

45

Histopathology

multinodular goiter

  

15

 

classic PTC

14

—

 

—

FVPTC

1

   

Tumor size (cm)

≤2

9

—

—

—

2–4

6

   

Invasion

Negative

10

—

—

—

Positivea

5

   

Lymph node metastasis b

Negative

7

—

—

—

Positive

8

   

TNM stage c

I, II

10

—

—

—

III, IV

5

   
  1. FVPTC; follicular variant of papillary thyroid carcinoma, MNG; multinodular goiter, PNT; paired normal tissue, PTC; papillary thyroid carcinoma.
  2. aIncludes 4 extracapsular invasion, and 1 extracapsular and lymphovascular invasions.
  3. bIncludes N1a and/or N1b.
  4. cAmerican Joint Committee on Cancer (AJCC) Tumor-Node-Metastasis (TNM) staging system.
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