J Lung Cancer.  2012 Dec;11(2):105-107. 10.6058/jlc.2012.11.2.105.

Extra-Adrenal Paravertebral Thoracic Myelolipoma

• Moon JW
• Han J
• Yi CA
• Choi YS

• KMID: 2199839
• DOI: http://doi.org/10.6058/jlc.2012.11.2.105

Abstract

Extra-adrenal myelolipoma is a rare benign tumor which can occur in the abdomen, thorax, or even in the face. We present a case of 58-year-old woman patient with thoracic myelolipoma, which has manifested as three paravertebral masses at the level of T9 and T10. The computed tomography scan showed heterogenous enhancing masses, which contained fat component. She underwent video-assisted thoracoscopic surgery, and the pathologic examination revealed adipose tissue with many hematopoietic cells, consistent with myelolipoma.

Keyword

Extraadrenal myelolipoma; Bilateral paravertebral nodules

MeSH Terms

Abdomen
Adipose Tissue
Female
Humans
Myelolipoma
Thoracic Surgery, Video-Assisted
Thorax

Figure

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  Fig. 1 (A, B) On computed tomography images, three paravertebral nodules were noted. They were well-defined and lobular shape, containing fat components. After contrast administration, they showed enhancement. No invasion to adjacent structures was seen. (C, D) During the operation, the lesions were presented as pink tan colored, lobular shape nodules, covered with pleura. (E~G) The lesions were consisted of mature adipose tissue and hematopoietic elements resembling bone marrow. Full trineage maturation of the hematopoietic component includes myeloid, erythroid, and megakaryotic lines (E, H&E, ×1; F, H&E, ×100; G, H&E, ×200). (H) Immunohistochemical stain for myeloperoxidase polyclonal antibody showed myeloid cell (×200).

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