| All | Benign tumors | Malignant tumors | P value |
---|---|---|---|---|
Number of patients | 46 | 29 | 17 | Â |
Age (years) | 44.8 (15.0–71.0) | 45.4 (15.0–71.0) | 43.7 (20.0–63.0) | 0.711 |
Gender, n (%) | Â | Â | Â | 0.885 |
 Male | 25 | 16 | 9 |  |
 Female | 21 | 13 | 8 |  |
Blood glucose level (mmol/l) | 5.4 | 5.2 | 5.6 | 0.062 |
18F-FDG injected dose (MBq) | 409.8 | 407.1 | 414.4 | 0.792 |
Size (cm) | Â | Â | Â | Â |
 Length | 4.2 (0.8–16.9) | 3.4 (0.8–8.4) | 5.2 (1.8–16.9) | 0.006 |
 Width | 3.5 (1.1–10.0) | 3.4 (1.1–7.9) | 4.2 (1.9–10.0) | 0.085 |
 Height | 3.9 (0.7–14.4) | 3.5 (0.7–8.1) | 6.9 (3.3–14.4) | 0.003 |
Location | Â | Â | Â | 0.923 |
 Atrium | 30 | 18 | 12 |  |
  Left | 10 | 7 | 3 |  |
  Right | 20 | 11 | 9 |  |
 Ventricle | 16 | 11 | 5 |  |
  Left | 4 | 3 | 1 |  |
  Right | 12 | 8 | 4 |  |
Calcification | 6 | 5 | 1 | Â |
ΔHU | 20.5 (1.0–76.0) | 17.0 (1.0–65.0) | 26.0 (18.0–76.0) | < 0.001 |
SUVmax_background | 2.1 (1.3–3.0) | 2.1 (1.3–2.9) | 2.2 (1.8–3.0) | 0.471 |
SUVmax_tumor | 3.5 (0.8–20.4) | 2.7 (0.8–4.9) | 6.7 (3.5–20.4) | < 0.001 |
SUVmean_tumor | 2.4 (0.6–8.6) | 2.0 (0.6–4.6) | 4.3 (2.2–8.6) | < 0.001 |
SUVmax_Glu_corrected | 3.4 (0.7–22.8) | 2.5 (0.7–5.7) | 6.6 (3.4–22.8) | < 0.001 |
TBR | 1.7 (0.5–11.3) | 1.3 (0.5–2.3) | 3.2 (1.3–11.3) | < 0.001 |
Pleural effusion | 13 | 3 | 10 | < 0.001 |
Pericardial effusion | 16 | 3 | 13 | < 0.001 |
Treatment and histopathology | Â | Â | Â | Â |
 Complete resection | 35 | 28 | 7 |  |
 Partial resection | 4 |  | 4 |  |
 Biopsy only | 5 |  | 5 |  |
 No histopathology | 2 | 1* | 1†|  |
Newly diagnosed | 42 | 26 | 16 | Â |
Recurrences | 4 | 3 | 1 | Â |
Tumor classification, n (%) | Â | Â | Â | Â |
 Benign tumors |  | 29 |  |  |
  Myxoma |  | 19 |  |  |
  Hemangioma |  | 4 |  |  |
  Lipoma |  | 3 |  |  |
  Other |  | 3 |  |  |
 Malignant tumors |  |  | 17 |  |
  Sarcoma |  |  | 12 |  |
   Angiosarcoma |  |  | 6 |  |
   Leiomyosarcoma |  |  | 2 |  |
   Other |  |  | 4 |  |
  Lymphoma |  |  | 2 |  |
  Intermediate   Malignant tumors‡ |  |  | 2 |  |
  Other |  |  | 1 |  |
Metastasis | Â | Â | Â | Â |
  Thoracic metastasis |  |  | 5 |  |
  Distant metastasis |  |  | 1§ |  |