Intraosseous Epidermal Inclusion Cyst of the Proximal Phalanx of the Fifth Toe and Review of the Literature: A Case Study

Foot Ankle Spec. 2017 Oct;10(5):470-472. doi: 10.1177/1938640017690859. Epub 2017 Feb 6.


Intraosseous epidermal inclusion cysts (IEpC) are benign bone tumors that often present in the phalanges of the fingers, but rarely are seen in the lower extremity. These tumors often present following surgery, and have a similar clinical and radiographic presentation to osteomyelitis. The lack of defining characteristics makes preoperative diagnosis of these tumors very difficult. It is crucial to differentiate these tumors from malignant lesions with similar presentation. This case study presents our treatment of this osseous tumor and reviews the available literature describing this condition.

Levels of evidence: Level V: Case report.

Keywords: benign and malignant tumors; general disorders; surgical complications.

Publication types

  • Case Reports
  • Review

MeSH terms

  • Amputation / methods
  • Bone Cysts / diagnostic imaging
  • Bone Cysts / pathology
  • Bone Cysts / surgery*
  • Disease Progression
  • Epidermal Cyst / diagnostic imaging
  • Epidermal Cyst / pathology
  • Epidermal Cyst / surgery*
  • Female
  • Follow-Up Studies
  • Foot Diseases / diagnostic imaging
  • Foot Diseases / pathology
  • Foot Diseases / surgery*
  • Humans
  • Magnetic Resonance Imaging / methods
  • Middle Aged
  • Pain Measurement
  • Severity of Illness Index
  • Toe Phalanges / diagnostic imaging
  • Toe Phalanges / pathology
  • Toe Phalanges / surgery*
  • Tomography, X-Ray Computed / methods
  • Treatment Outcome
  • Wound Healing / physiology