Abstract
Intravascular endothelial hyperplasia is a benign soft tissue mass rarely reported
in the foot. Advanced imaging and confirming a benign diagnosis are critical for any
soft tissue mass. This paper identifies 2 patients that developed intravascular endothelial
hyperplasia tumors which required surgical excision. A 17-year-old male patient presented
to clinic complaining of a painful bump to the arch of his right foot which he related
to an injury 9 months prior. Magnetic resonance imaging of the right foot revealed
a mass within the plantar subcutaneous fat that was serpiginous in nature similar
to adjacent branching vessels favoring a low-flow vascular malformation. A 38-year-old
female with Multiple Sclerosis presented with complaints of persistent symptoms of
pain to the 1st interspace, difficult ambulation and neuritis. Ultrasound and MRI observed solid,
multilobulated mass, with internal vascular malformation, MRI describing intrinsic
involvement along the abductor musculature and flexor tendons. Both lesions were surgically
excised and sent for pathology. Pathology report indicated a diagnosis of intravascular
papillary endothelial hyperplasia or Masson's tumor in both cases. Pathology diagnosis
of intravascular papillary endothelial hyperplasia is generally good with wide resection
leading to low recurrence rates. Both patients in the current study have progressed
postoperatively with resolution of symptoms and without recurrence.
Level of Clinical Evidence
Keywords
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Article info
Publication history
Published online: November 19, 2022
Publication stage
In Press Corrected ProofFootnotes
Financial Disclosures: There was no funding source for this case report.
Conflicts of Interest: The authors declare that they have no competing interests and no conflicts of interest to disclose related to the production of this publication.
This case study did not require IRB review since it does not meet the Common Rule definition of research, therefore no informed consent was required/obtained per institute policy.
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