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Table 2 Correlation of Cytologic diagnosis with final histology, with incidence of malignancy in each Bethesda category

From: Diagnostic accuracy of Bethesda system for reporting thyroid cytopathology: an institutional perspective

Cytological diagnosis

Number of cases

Percentage

Histological diagnosis

Frequency

Percentage

Incidence of malignancy

Bethesda 2

45

73.77%

Benign

Nodular hyperplasia

6

13.3%

11.1%

Multinodular hyperplasia

30

66.7%

Adenomatous hyperplasia

2

4.4%

Hashimoto thyroiditis

1

2.2%

Folicular adenoma

1

2.2%

Malignant

Follicular variant of papillary carcinoma

1

2.2%

Papillary carcinoma

3

6.7%

Medullary carcinoma

1

2.2%

Bethesda 3

6

9.84%

Benign

Multinodular hyperplasia

3

50%

33.3%

Adenomatous hyperplasia

1

16.7%

Malignant

Follicular variant of papillary carcinoma

1

16.7%

Follicular carcinoma

1

16.7%

Bethesda 4

4

6.56%

Benign

Adenomatous hyperplasia

1

25%

25%

Hashimoto thyroiditis

1

25%

Hurthle cell adenoma

1

25%

Malignant

Papillary carcinoma

1

25%

Bethesda 5

4

6.56%

Malignant

Papillary carcinoma

3

75%

 

Non hodgkin lymphoma

1

25%

       

100%

  

3.28%

Malignant

Papillary carcinoma

2

100%

 

Bethesda 6

2

     

100%

Total

61

100.00%

  

61