Although CD34 positivity, as part of an appropriate immunohistochemical panel, is diagnostically useful in the context of gastrointestinal spindle cell tumours, it is important to realise that it is a ubiquitous antigen present in many different tumours. |
Gastrointestinal tumours |
• Gastrointestinal stromal tumours |
Tumours occurring primarily outside the gastrointestinal tract |
• Non-gastrointestinal smooth muscle tumours |
• Solitary fibrous tumour |
• Dermatofibrosarcoma protuberans |
• Kaposi's sarcoma |
• Lipoma/angioliopma/spindle cell lipoma/atypical lipoma |
• Neurofibroma |
• Vascular tumours |
• Epithelioid sarcoma |