Fine-Needle Aspiration Biopsy and Endoscopic Ultrasound for Pretreatment Pathological Diagnosis of Gastric Gastrointestinal Stromal Tumors

Table 1

Patients’ clinicopathological characteristics (𝑛=23).

Variables	Number of subjects
Sex
Male	12
Female	11
Age (years, [mean, range])	60.0, 26–92
Main tumor site
Upper third of stomach	16
Middle third of stomach	6
Lower third of stomach	1
Clinically determined tumor diameter; (mm, [mean, range])	36.6, 18–60
Ulceration
Present	12
Absent	11
Number of endoscopies (mean, range)	2.7, 1–8
Endoscopic ultrasound
Yes	15
No	8
Number of biopsies/patient (mean, range)	1.4, 1–5
Fine-needle aspiration biopsy
Yes	12
No	11
Preoperative pathological diagnosis
Gastrointestinal stromal tumor	18
Leiomyoma	1
Normal gastric mucosa	4
Pathologically determined tumor diameter; (mm, [mean, range])	45.4, 16–110
Gastrectomy
Partial	20
Proximal	2
Distal	1
GIST risk group
Low	13
Intermediate	5
High	5