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Hepatic Mesenchymal Hamartoma
Joseph Junewick, MD FACR
over 10 years ago
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Case History

Newborn with rapidly increasing chest wall mass on prenatal imaging.

Case Detail

Anatomy: Chest
Joseph Junewick, MD FACR
Diagnostic Category: Neoplasia Malignant
Created: over 10 years ago
Updated: over 9 years ago
Tags: PEDS
Modality/Study Types: CT US CR
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Case Images

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Reveal Findings

CXR – Huge left chest wall mass with intrathoracic and extrathoracic components; no overt fat or calcium density seen. The ribs appear osteopenic and deformed.

US – Cystic mass with thick septations.

CT – Solid and cystic left chest wall mass. The left subclavian artery is enlarged.

Reveal Discussion

Infantile fibrosarcoma (IF), also known as congenital myofibroblastic sarcoma, is a rare low-grade malignancy seen in children. About 1/3 of cases are congenital and most occur in pre-school aged children. The limbs are the most common site; the trunk is unusual. IF grows rapidly. Metastatic disease is present in <10% but is more prevalent if IF is diagnosed after 10 years of age. Histologically IF is similar to fibrosarcoma but cytogenetically distinct. It is interesting that IF is most similar to congenital mesoblastic nephroma, both displaying the same chromosome translocation t(12;15)(p13;q25).

Reveal Diagnosis

Infantile Fibrosarcoma of the chest wall..

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