Metastatic Malignant Ectomesenchymoma Initially Presenting as a Pelvic Mass: Report of a Case and Review of Literature

<div>Histologic features of tumor in the left inguinal lymph node. (a) Neuroblastoma component with nodular growth pattern. (b) Each nodule is composed of primitive neuroblasts with scant amount of neuropil. (c) Neuroblasts with salt and peppery nuclei and low MKI (hematoxylin-eosin, original magnification ×40 (a); original magnification ×200 (b); original magnification ×400 (c)).</div>

Case Reports in Pediatrics

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Figure 3: Metastatic Malignant Ectomesenchymoma Initially Presenting as a Pelvic Mass: Report of a Case and Review of Literature 