38-year-old male. Man with NF1 who has a deep muscular neurofibroma on the right upper abdomen. Please define intramuscular neurofibroma in the upper lateral abdomen. ABDOMEN:LIVER, BILIARY TRACT: No significant abnormality noted.SPLEEN: No significant abnormality noted.PANCREAS: No significant abnormality noted.ADRENAL GLANDS: No significant abnormality noted.KIDNEYS, URETERS: No significant abnormality noted.RETROPERITONEUM, LYMPH NODES: Small and mildly enlarged retroperitoneal lymph nodes, nonspecific.BOWEL, MESENTERY: No significant abnormality noted.BONES, SOFT TISSUES: Three subcentimeter round STIR hyperintense foci in the right erector spinae muscle, likely intramuscular neurofibromas. The largest measures 0.8 x 0.7 cm (series 11, image 21).OTHER: Numerous cutaneous nodules consistent with neurofibromas, the largest is approximately 1.3 x 0.6 cm in the central abdomen.
1.3 subcentimeter STIR hyperintense foci in the right erector spinae muscle, likely small intramuscular neurofibromas.2.Numerous cutaneous neurofibromas consistent with known NF1.