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Localised peripheral primitive neuroectodermal tumour (PNET) of the conjunctiva
Andrew S Moore1, Peter G Wilson, Penny McKelvie
1Section of Paediatric Oncology, The Institute of Cancer Research & Royal Marsden Hospital, Sutton, Surrey, UK. andrew.moore@icr.ac.uk
Pediatric Blood & Cancer
|June 4, 2009
Summary
A rare conjunctival tumor, peripheral primitive neuroectodermal tumor (PNET), was diagnosed in a teen. Treatment involved surgery and chemotherapy, with a positive outcome observed.
Area of Science:
- Ophthalmology
- Oncology
- Pathology
Background:
- Conjunctival tumors are rare, and primitive neuroectodermal tumors (PNETs) are exceptionally uncommon in this location.
- Early diagnosis and appropriate treatment are crucial for managing ocular tumors.
Observation:
- A 16-year-old male presented with a 3-month history of an asymptomatic, enlarging conjunctival lesion.
- Histologic and immunohistochemical examination of an excisional biopsy revealed features of a peripheral PNET adjacent to a benign compound nevus.
Findings:
- Fluorescence in situ hybridization (FISH) analysis confirmed the diagnosis by demonstrating a split-signal at 22q12.
- Staging investigations were negative, indicating a primary conjunctival lesion.
- The patient underwent local wide re-excision and chemotherapy.
Implications:
- This case highlights the importance of considering rare tumors like PNET in the differential diagnosis of conjunctival lesions.
- Successful management with a combination of surgery and chemotherapy offers a potential treatment paradigm for similar cases.
- Long-term follow-up is essential to ensure sustained remission and monitor for any recurrence.
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