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J Indian Assoc Pediatr Surg. 2019 Jul-Sep;24(3):219-221. doi: 10.4103/jiaps.JIAPS_115_18.

Perianal and Perineal Spindle Cell Variant of Embryonal Rhabdomyosarcoma in an Infant.

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Department of Pediatric Surgery, SMS Medical College, Jaipur, Rajasthan, India.
Department of Pathology, SMS Medical College, Jaipur, Rajasthan, India.


We present a case of a perianal and perianal spindle cell variant of embryonal rhabdomyosarcoma (RMS). A 3-month-old male child presented with a firm mass in the perianal region. The mass measured 5 cm × 3 cm × 2 cm was surgically removed. Biopsy was performed; it showed embryonal RMS. Immunohistochemical (IHC) stains were performed using vimentin, myogenin, spinal muscular atrophy, and muscle-specific actin, which all showed positive results. The histological examination and IHC stains were consistent with a spindle cell variant of embryonal RMS.


Embryonal; infant; perianal; rhabdomyosarcoma

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