Table 2 Clinicopathologic profile of PIK3CA mutant GISTs reported in this study

From: Frequency and clinicopathologic profile of PIK3CA mutant GISTs: molecular genetic study of 529 cases

Case no.

Age

Sex

Location

Tumor size (cm)

Mitosis/50HPF

Group a

Histology

Follow-up (months)

1

64

M

Stomach

22

21

6b

Spindle cell

DOD (11)

2

48

F

Stomach

19

72

6b

Spindle to ovoid cell

DUNK (8)

3

79

M

Stomach

14

1

3b

Spindle cell

DUC (279)

4

61

F

Stomach

N/A

0

N/A

Spindle cell

N/A

5

55

M

Small bowel

17

29

6b

Spindle cell

DOD (6)

6

51

M

Retroperitoneum

20

4

3b

Spindle to ovoid cell

DUNK (35)

7

51

M

Retroperitoneum

>15

3

3b

Spindle cell

DUNK (10)

8

45

F

Retroperitoneum

14

5

3b

Spindle cell

DUNK (27)

9

40

M

Metastasis in the liver (primary tumor, small bowel GIST)

N/A

N/A

N/A

Spindle cell

N/A

10

84

M

Metastasis in the abdominal wall (primary tumor unknown)

N/A

N/A

N/A

Epithelioid

N/A

  1. Abbreviations: DOD, died of disease; DUC, died of unrelated causes; DUNK, died of unknown causes; N/A, not available.
  2. aBased on previously published classification.1