Table 7.
Incorrect diagnoses
| Patient | Needle biopsy | Repeat biopsy* | Treatment | Final diagnosis | Change in treatment |
|---|---|---|---|---|---|
| 1 | No neoplasm | Metastatic renal carcinoma (n) | Right femoral nail | Metastatic renal carcinoma | |
| 2 | Intramuscular myxoma | None | Surgical resection | Dedifferentiated liposarcoma Grade 2 | |
| 3 | No neoplasm | Telangiectatic osteosarcoma (n) | Chemotherapy and surgery | Telangiectatic osteosarcoma | |
| 4 | Benign nerve sheath tumor | Neurofibrosarcoma (o) | Preoperative chemotherapy and radiation, surgical resection | Neurofibrosarcoma Grade 3 | |
| 5 | Perineuroma | Low grade sarcoma (o) | Surgical resection | Fibromxyoid sarcoma | |
| 6 | Spindle cell neoplasm/ solitary fibrous tumor | None | Surgical resection | Malignant fibrosarcoma | Add postoperative radiation therapy |
| 7 | Osteonecrosis | Diffuse large B cell lymphoma (o) | Chemotherapy | Diffuse large B cell lymphoma Grade 2 | |
| 8 | Nodular fasciitis | None | Surgical resection | Fibrosarcoma, intermediate grade | Postoperative radiation |
| 9 | Osteofibrous dysplasia | Osteosarcoma Grade 1 (o) | Surgical resection | Fibroblastic osteosarcoma Grade 1 | |
| 10 | High-grade cancer (metastatic prostate carcinoma) | None | Surgical resection | Pleomorphic liposarcoma | Add postoperative radiation therapy |
* n = needle biopsy; o = open biopsy.