A 36 year old woman with a "thick foot"

Case Identification

Case ID Number
Body region
Benign or Malignant

Clinical case information

Case presentation

This active and fit 36 year old woman has been practicing mixed martial arts and kickboxing. She says her right foot has been "thick" and swollen for about 6 months.

Radiological findings:
A soft tissue mass in the plantar aspect of the foot, dark on T1 and bright on T2, measures about 12 by 6 by 6 centimeters.
Laboratory results:
No labs were needed.
Differential Diagnosis
Soft tissue tumors, benign and malignant
Further Work Up Needed:
What additional physical examination steps should be taken? What imaging exams are needed to complete the work-up?
Pathology results:
See the images shown from the biopsy material. The immunohistochemistry images demonstrate that the tumor stains postitive for keratin (not shown), and positive for EMA (see image).
Case Answer
Clinical Case Answer