Case Challenge

Foot & Ankle

Stephen J Pomeranz

Gain confidence interpreting Foot & Ankle MRI Cases with MRI Online. Quiz yourself using real-world, interactive scrollable cases & earn CME. Try it free!

Case Review

Musculoskeletal (MSK)

Post-Course Activities

This Power Pack is comprised of 25 unique Foot / Ankle MRI cases that you can scroll through in our diagnostic web viewer to determine your findings. Quiz yourself and earn CME.

Foot & Ankle MRI Cases

Case 9 - 11-year-old female presents with lump on third digit of right foot

<div>HISTORY:&#160;This 11-year-old female presents with lump on third digit for more than 1 year, lump is moving with time, not growing any larger, no pain, no surgery, no injections, no cancer, not diabetic.(QUIZ ANSWER) MOST LIKELY PRIMARY FINDING:&#160;Ganglion.Using the&#160;diagnostic web viewer, we have provided images that assist in telling our clinical story. Areas of significance are indicated below.FINDINGS:&#160;SKELETAL: No fracture, stress fracture, or contusion.&#160;LIGAMENTS AND TENDONS: Visualized ligaments and tendons of the mid and forefoot without abnormality. No hypertrophic tendinosis, or acute tear. No turf toe with intact abductor hallucis tendon insertion on the medial sesamoid and medial capsule, transverse and oblique heads of the abductor hallucis muscle fibers intact and the lateral sesamoid capsule endplate. Medial and lateral heads of the flexor hallucis brevis demonstrate normal insertion onto the sesamoids plantar to the first MTP.&#160;MUSCLES: Intrinsic muscles of the toes are intact without hemorrhagic tear or strain. No muscle atrophy.&#160;&#160;JOINT SPACES: No evidence of active capsulitis or regional erosion.&#160;PLANTAR SOFT TISSUE/ SUBCUTANEOUS FAT: Pressure-related soft tissue thickening/fibrosis deep to the head of the 5th metatarsal. No perineural fibrosis or discrete Morton's neuroma. Trace fluid signal within the third intermetatarsal space demonstrated coronally.Dominant 8.6 AP x 8.9mm craniocaudad x 12mm oblique AP diameter ganglion along the medial and dorsal margin PIP joint of the third toe. The lesion spares the DIP joint. No adjacent erosions or distortion of the pulleys or flexor tendons of the toe.&#160;PLANTAR PLATES: No sesamoiditis or AVN. First MTP articulation, to include the medial and lateral collateral ligaments and intersesamoid ligament: (intact). Medial and lateral dorsal main collateral and hammock like accessory sesamoid ligaments are not disrupted. Lesser plates without chronic or acute tear.&#160;CONCLUSION:&#160;1. 12 x 10mm ganglion versus epidermoid or cystic schwannoma PIP joint medial and plantar surface of the third toe.&#160;2. Otherwise, normal.&#160;3. Trace intermetatarsal bursal fluid in the third MT space.</div>

Case

Along the medial and dorsal margin proximal interphalangeal joint (PIP) of the third toe, what is the most likely primary finding?