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Table 1 NIH consensus guidelines

From: Retroperitoneal solitary neurofibroma mimicking lymph node metastasis of colon cancer: a case report

NIH consensus guidelines: diagnostic criteria for neurofibromatosis I

Two or more of the following

1. Six or more café-au-lait macules that are (in greatest diameter) > 5 mm in pre-pubertal individuals > 15 mm in post-pubertal individuals

2. Two or more neurofibromas of any type, or one plexiform neurofibroma

3. Axillary/inguinal freckling

4. Optic glioma

5. Two or more Lisch nodules

6. Distinctive osseous lesion (i.e., sphenoid dysplasia or thinning of long bone cortex with or without pseudoarthrosis)

7. First degree relative with NF-1