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Published on: March 22, 2024
"Pseudosarcoma" in a pregnant woman
Amarjit Anand1, Eva Maria Tsapakis, Ali A Narvani
1Royal Free and University College London Hospitals, Royal National Orthopaedic Hospital, Bone Tumour Unit, Brockley Hill, Stanmore, Middlesex, HA7 4L, UK. amarjitanand@doctors.org.uk
Background:
Intravascular fasciitis (IVF) is a rare benign condition characterised by reactive myofibroblastic proliferation arising from the superficial or deep fascia and involving arteries and/or veins. It is a distinct variant of the more common condition of nodular fasciitis, which possesses similar clinical and histological features to IVF, but lacks vascular invasion. A thorough review of the literature revealed 26 reported cases of IVF.
Case Presentation:
We report a case of IVF in a 16-week pregnant lady affecting the hypothenar eminence of the hand associated with the ulnar artery.
Conclusion:
The characteristic involvement of muscular arteries and veins by reactive myofibroblastic proliferation in IVF suggests a malignant component and often leads to an inappropriate diagnosis for this benign condition. We propose that hormone-related changes associated with pregnancy may play an important role in the aetiopathogenesis of this myofibroblastic lesion.
Insights
Intravascular fasciitis (IVF), a rare benign condition, involves myofibroblastic proliferation in blood vessels. Pregnancy may influence the development of this condition, as seen in a case report.
Area of Science:
- Vascular Pathology
- Histopathology
- Reproductive Medicine
Background:
- Intravascular fasciitis (IVF) is a rare benign condition characterized by myofibroblastic proliferation involving arteries and/or veins.
- It is a distinct variant of nodular fasciitis, differing by the presence of vascular invasion.
- Only 26 cases of IVF have been previously reported in the literature.
Purpose of the Study:
- To report a unique case of intravascular fasciitis (IVF) in a pregnant patient.
- To explore the potential role of pregnancy-related hormonal changes in the pathogenesis of IVF.
Main Methods:
- Case report of a 16-week pregnant patient with IVF.
- Clinical and histological evaluation of the lesion affecting the hypothenar eminence and ulnar artery.
Main Results:
- The case presented a reactive myofibroblastic proliferation involving the ulnar artery in the hypothenar eminence.
- Histological features mimicked malignancy, highlighting diagnostic challenges.
Conclusions:
- The vascular involvement in IVF can be mistaken for malignancy, leading to misdiagnosis of this benign condition.
- Hormonal fluctuations during pregnancy may contribute to the development of intravascular fasciitis.
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