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Indian Journal of Pathology and Microbiology
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CASE REPORT
Year : 2018  |  Volume : 61  |  Issue : 2  |  Page : 278-280

Extranodal histiocytic sarcoma in a child with acute lymphoblastic leukemia: Cytomorphological features of a rare entity with brief review of literature


1 Department of Pathology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
2 Department of Radiotherapy, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India

Correspondence Address:
Vinita Agrawal
Department of Pathology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow - 226 014, Uttar Pradesh
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/IJPM.IJPM_67_16

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Histiocytic sarcoma (HS) is a rare malignant neoplasm showing morphologic and immunophenotypic evidence of histiocytic differentiation. We describe a rare case of synchronous HS in a patient of B-cell acute lymphoblastic leukemia (ALL). A 16-year-old boy diagnosed as ALL also presented with a swelling over the right Achilles tendon. The cytological features of the swelling suggested a histiocytic lesion. Histological and immunohistochemical examination clinched the diagnosis of HS. The available 5-year follow-up showed no recurrence. It was a diagnostic dilemma on fine-needle aspiration. We discuss the cytological features of HS which can help in reaching a diagnosis and emphasize that it should be considered in the differential diagnosis for unexplained swellings in patients of hematological malignancies. Wide local excision of localized HS is associated with a long-term favorable outcome.


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