Table 2 Patient characteristics
From: Schwannoma of the colon and rectum: a systematic literature review
Characteristics | |
|---|---|
Number | 95 |
Age | 61.2 years, range 14–95, median 64 years |
Sex | |
 Male | 40 (41.7%) |
 Female | 56 (58.3%) |
Presenting symptom | |
 Asymptomatic | 27 (28.1%) |
 Rectal bleeding | 22 (22.9%) |
 Fecal occult blood | 8 (8.3%) |
 Abdominal pain | 15 (15.6%) |
 Constipation | 7 (7.3%) |
 Tenesmus | 7 (7.3%) |
 ↗ Abdominal girth | 2 (2.1%) |
 NA | 14 (14.6%) |
Location | |
 Cecum and right colon | 29 (30.2%) |
 Transverse colon | 5 (5.2%) |
 Sigmoid | 27 (28.1%) |
 Left colon | 8 (8.3%) |
 Rectum | 21 (21.9%) |
 Appendix | 1 (1%) |
 NS | 5 (5.2%) |
Colonoscopy | 73 (76%) |
 Smooth submucosal mass | 41 (56.2%) |
 Ulcerated submucosal mass | 5 (6.8%) |
 Submucosal polyp | 15 (20.5%) |
 Intraluminal mass | 6 (8.2%) |
 Polypoid | 3 (4.1%) |
 Others | 3 (4.1%) |
Imaging | 46 (48%) |
 CT-SCAN | 35 (76%) |
  Well circumscribed | 13 (37.1%) |
  Homogenous enhancement | 12 (34.3%) |
  Central necrosis | 1 (1%) |
 EUS: hypo-echoic mass | 7 (7.3%) |
 FDG-PET | 4 (4.2%) |
 Hyper | 3 (3.1%) |
 Size (cm) | 3.78 cm, range 0.3–28, median 3 cm |
Diagnosis | |
 Endoscopy | 23 (24%) |
 Post-surgery | 71 (74%) |
Type of surgery | |
 Laparoscopic | 11 (11.5%) |
 Open | 58 (60.4%) |
 Endoscopic | 15 (15.6%) |
 Transanal | 7 (7.3%) |
 NA | 5 (5.2%) |
Extent of surgery | |
 Classical segmental | 65 (67.7%) |
 Wedge | 3 (3.1%) |
 Endo-luminal | 23 (24%) |
Tumor markers | |
 S100 | 94 (97.9%) |
 Vimentin | 13 (13.5%) |
 GFAP | 5 (5.2%) |
 CD-34 | 2 (2.1%) |
 CD-68 | 1 (1%) |
Antonini type | 26 (27.1%) |
 A | 15 (57.7%) |
 B | 6 (23.1%) |
 A, B | 5 (19.2%) |
Mitosis | |
 Ki-67% | 5 (5.2%) |
 MIB-1 | 6 (6.3%) |
 Low mitosis | 30 (31.3%), mean 2.1/50, median 1/50 |
 NA | 55 (57.3%) |
LN | |
 NA | 85 (88.5%) |
 Negative | 11 (11.5%) |
Aggressiveness | |
 Benign | 93 (96.9%) |
 Malignant | 3 (3.1%) |