Research Article
Histopathological Diagnostic Discrepancies in Soft Tissue Tumours Referred to a Specialist Centre
Table 1
Major discrepancies.
(a) Malignant Malignant |
| Previous Diagnosis | Final Diagnosis | Number of cases |
| GIST | Leiomyosarcoma | 3 | | Liposarcoma, dedifferentiated | 2 | | Liposarcoma, well differentiated | 1 | | Kaposi sarcoma | 1 | Leiomyosarcoma | GIST | 2 | | SFT, malignant | 1 | | Alveolar RMS | 1 | Atypical leiomyoma | Endometrial stroma sarcoma | 1 | Rhabdomyosarcoma | Ewing sarcoma | 1 | Liposarcoma, WD | Liposarcoma, dedifferentiated | 2 |
|
|
(b) Grading |
| Previous Grade | Final Grade | Number of cases |
| Leiomyosarcoma, grade 3 | Grade 1 | 1 | Leiomyosarcoma, grade 2 | Grade 1 | 3 | Leiomyosarcoma, grade 1 | Grade 2 | 5 |
|
|
(c) Mesenchymal Nonmesenchymal |
| Previous Diagnosis | Final Diagnosis | Number of cases |
| DSRCT | Carcinoma/GCT | 1 | Granuloma ?Sarcoma | Seminoma, metastatic | 1 | ?Sarcoma | GCT | 1 | ?Sarcoma ?Melanoma | Anaplastic carcinoma | 1 | ?Sarcoma | DLBCL | 1 | Chondrosarcoma | Metaplastic carcinoma | 1 | MPNST | Melanoma, metastatic | 1 |
|
|
(d) Benign Malignant |
| Previous Diagnosis | Final Diagnosis | Number of cases |
| Cellular neurothekeoma | GIST | 1 | Leiomyoma | Leiomyosarcoma | 1 | Lipoma | Liposarcoma, WD | 1 |
|
|
(e) Malignant Benign |
| Previous Diagnosis | Final Diagnosis | Number of cases |
| Low-grade fibromyxoid sarcoma | Superficial angiomyxoma | 1 | Liposarcoma, WD | Lipoma | 1 |
|
|
(f) Other |
| Previous Diagnosis | Final Diagnosis | Number of cases |
| IMT | Fibromatosis | 1 | Nodular fasciitis | Fibromatosis | 1 |
|
|