Differential diagnosis of NF1!
I think the qustion is testing if we know phaeochromocytoma as its possible differential diagnosis!
Can be wrongly diagnosed!
Patient is in trouble if we miss this pre-op! May even die from hypertensive crisis!
Conditions causing tumours confused with neurofibromas
1. Multiple lipomas – affect limbs and trunk
2. Bannayan–Riley Ruvalcuba syndrome – multiple lipomas, haemangiomas, macrocephaly pigmented patches on penis
3. Fibromatosis – multiple tumours of muscle, skin, bones and internal organs
4. Multiple endocrine neoplasia type 2B – phaeochromocytomas, mucosal neuromas, medullary carcinoma of thyroid, gastrointestinal ganglioneuromatosis, marfanoid habitus
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