A Rare Case of Intrascrotal Lipoblastoma in a Child

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  • Suganuma Rie
    Department of Pediatric Surgery, Japan Organization of Occupational Health and Safety, Yokohama Rosai Hospital Department of Pediatric Surgery, Showa University School of Medicine
  • Watarai Yu
    Department of Pediatric Surgery, Showa University School of Medicine
  • Sato Hideaki
    Department of Pediatric Surgery, Showa University School of Medicine
  • Kikuchi Nobuyuki
    Department of Pediatrics, Japan Organization of Occupational Health and Safety, Yokohama Rosai Hospital
  • Sakuma Hiroyuki
    Department of Pediatrics, Japan Organization of Occupational Health and Safety, Yokohama Rosai Hospital
  • Ozasa Koji
    Department of Pediatrics, Japan Organization of Occupational Health and Safety, Yokohama Rosai Hospital
  • Nishi Daisuke
    Department of Pediatrics, Japan Organization of Occupational Health and Safety, Yokohama Rosai Hospital
  • Kiss Borbala
    Department of Radiology, Japan Organization of Occupational Health and Safety, Yokohama Rosai Hospital
  • Matsui Seishi
    Department of Radiology, Japan Organization of Occupational Health and Safety, Yokohama Rosai Hospital
  • Kakuta Yukio
    Department of Pathology, Japan Organization of Occupational Health and Safety, Yokohama Rosai Hospital

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Other Title
  • 小児陰囊内脂肪芽腫の1例
  • ショウニ インノウ ナイ シボウ ガ シュ ノ 1レイ

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Abstract

<p>Lipoblastoma of the scrotum is rare in children. It represents one of several differential diagnoses of scrotal mass, which include malignant tumors. We present a case of intrascrotal lipoblastoma in a child and describe its surgical management. A seven-year-old boy presented with an asymptomatic and palpable mass on the left side of the scrotum for one month. Physical examination revealed an oval mass, distinct from the left testis, measuring approximately 3.0 × 1.5 × 2.0 cm. Ultrasonography demonstrated a heterogeneous and hyperechoic mass with minimal peripheral vascularity in the superior part of the left scrotal cavity. T1- and T2-weighted MRI revealed a mass containing a mixture of hyper- and hypointensities, which was indicative of intrascrotal lipoblastoma. The levels of testis tumor markers were within the normal range. Chest radiography and abdominal CT indicated no metastasis. The mass was approached via a left scrotal incision. A well-encapsulated, soft, round, and yellow mass arising from the lipomatous tissue was free from the ipsilateral testis and spermatic cord. The mass was excised en bloc with the surrounding uninvolved vessels while preserving the normal testis and epididymis. The surgically resected specimen consisted of a nodular mass surrounded by a capsule composed of loose connective tissue. Histopathological examinations confirmed the diagnosis of a lipoblastoma. The patient has been followed up for two years with no sign of recurrence.</p>

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