Radiology Teaching Files > Case 771826

Contributed by: Residents Kaiser, Resident, Kaiser Permanente, California, USA.
Patient: 4 year old male
History: Knee pain.

Fig. 1

Fig. 2

Fig. 3: Cor T1

Fig. 4: Sag T2 fat sat

Fig. 5: Ax T1

Fig. 6: Ax T2 fat sat
Findings: Cortical lytic lesion medial femoral metaphysis.
Diagnosis: Normal cortical irregularity "cortical desmoid" at origin of medial gastrocnemius.
Discussion: Typical finding in skeletal immature patient of cortical irregularity at muscle origins/insertions.
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Additional Details:

Case Number: 771826Last Updated: 10-14-2004
Anatomy: Skeletal System   Pathology: Normal/Variants
Modality: Conventional Radiograph, MRExam Date: 05-15-2003Access Level: Readable by all users
Keywords: cortical irregularity syndrome

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