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| Code | Diagnosis | Comment | Score |
| anonymous | Schwannoma (70%). Differential diagnosis: Gastrointestinal stromal tumour, GIST (30%) | To perform immunostains for S100, c-kit and CD34. Schwannoma will be positive for S100 while gastrointestinal stromal tumour (GIST) will be positive for c-kit and CD34. | 100 |
| anonymous | Gastrointestinal stromal tumor | Combined with tumor size and mitotic figure for malignant behavior | 40 |
| anonymous | Spindle cell tumor consistent with Schwannoma. DDx GIST and leiomyoma. | Immunos to confirm schwannoma (S-100 protein +ve) GIST (+ve C-kit +/- CD34) Leiomyoma (Smooth muscle actin +ve) | 100 |
| anonymous | Schwannoma | Confirm by immunostaining for S100. Differential diagnosis: Gastrointestinal stromal tumor (C-kit positive). | 100 |
| anonymous | Neurilemoma 70% Gastrointestinal stromal tumor 30%. | Immunostains can help arrive at a definitive diagnosis. S100 +ve in schwannoma. C-kit +ve in GIST. | 100 |
| anonymous | Spindle cell tumor. Schwannoma needs to be considered. DDx includes GIST, smooth muscle tumor, etc. (100%) | Do S100 protein to support schwannoma. c-kit and CD34 for GIST; desmin and actin for smooth muscle tumor. | 100 |
| anonymous | Stomach - Schwannoma 99% GIST 1% | To correlate with immunostains results of S-100 protein and c-kit | 100 |
| anonymous | Gastrointestinal stromal tumour (GIST)(70%), Schwannoma (30%) | Areas of ? infarct/? hyaline change, low mitotic count in this block. Examine more blocks and correlate with the size of the tumour to determine the malignant potential. Immunohistochemistry panel : Most GIST are c-kit positive. Need to exclude other stromal tumours: S100 (positive for schwannoma), smooth muscle neoplasms are SMA and desmin positive. Cytokeratin to rule out the remote possibility of spindle cell carcinoma. | 60 |
| anonymous | Spindle cell tumor: 1) Follicular dentritic cell tumor? 2) Peripheral nerve sheath tumor? 3) Gastrointestinal stromal tumor? | nil | 50 |
| anonymous | SPINDLE CELL TUMOUR of gastric wall, morphologically suggestive of Schwannoma, differential diagnosis include Gastrointestinal stromal tumour. Require immunohistochemical staining for differential diagnosis. (100%) | nil | 100 |
| anonymous | Schwannoma 75% GIST 25% | S100 to confirm nerve sheath origin c-kit, CD34 to exclude GIST desmin to exclude leiomyoma | 100 |
| anonymous | Gastric spindled cell tumor | Differential diagnoses are schwannoma and gastrointestinal stromal tumor. To be differentiated by immunohistochemical staining: S100, CD117 | 80 |
| anonymous | Gastrointestinal stroma tumor/Gastrointestinal autonomic nerve tumor (GIST/GANT) | nil | 40 |
| anonymous | Neurilemmoma. Do S100 to confirm, also do CD117, CD34 to exclude GIST and desmin and SMA for smooth muscle tumour. Probability: 100% | nil | 100 |
| anonymous | Gastrointestinal mesenchymal tumour (100%), favour Schwannoma (80%). Gastrointestinal stromal tumour (GIST) (20%) | Perform S100 protein immunostain to confirm schwannoma, CD117 to rule out GIST and actin to rule out smooth muscle tumour. | 100 |
| anonymous | Neurilemmoma (50%) Gastrointestinal stromal tumour (50%) | Immunohistochemical staining for S-100 protein, CD34, c-kit, SMA and desmin for definitive diagnosis. | 80 |