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Myeloid metaplasia masquerading as a urethral caruncle
The Journal of Urology
|April 1, 1986
Summary
A rare case of urethral caruncle in a woman was found to be myeloid metaplasia, a condition where the bone marrow function moves to other organs. This finding highlights the importance of thorough histological examination for accurate diagnosis and treatment.
Area of Science:
- Urology
- Hematology
- Pathology
Background:
- A 64-year-old woman presented with a painless bleeding mass at the urethral meatus, initially diagnosed as a caruncle.
- The patient had a history of myeloproliferative disorder with thrombocytosis and myelofibrosis, leading to bleeding and clotting issues.
Observation:
- Surgical removal of the caruncle revealed a polypoid lesion.
- Histological examination showed a vascular lesion with megakaryocytes and hematopoietic stem cells, indicative of extramedullary hematopoiesis.
- Immunoperoxidase staining confirmed the diagnosis of myeloid metaplasia.
Findings:
- The urethral caruncle was a manifestation of extramedullary hematopoiesis secondary to myeloid metaplasia.
- No other sites of extramedullary hematopoiesis were identified.
- The patient remained asymptomatic with no urinary complaints 22 months after surgical intervention.
Implications:
- This case underscores the potential for rare presentations of myeloproliferative disorders.
- Thorough histopathological analysis is crucial for diagnosing unusual manifestations like extramedullary hematopoiesis in the urinary tract.
- Understanding these associations can improve diagnostic accuracy and patient management for hematologic malignancies.