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Intraosseous Lipoma with Subsequent Esophageal Carcinoma Metastasis

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Author(s): Singh Ramandeep | Madewell John | Rao Priya | Bean Gregg | Czerniak Czerniak | Lin Patrick

Journal: Open Journal of Medical Imaging
ISSN 2164-2788

Volume: 02;
Issue: 02;
Start page: 64;
Date: 2012;
Original page

Keywords: Intraosseous Lipoma | Esophageal Cancer | MRI | PET/CT | Metastasis

ABSTRACT
Background: This case report describes a well documented proximal femoral metadiaphysis intraosseous lipoma which later developed metastasis from a new esophageal cancer. Metastatic disease to benign conditions is a rare finding. To the best of our knowledge, this is the first reported case of metastatic disease to an intraosseous lipoma. Case Description: The metastatic deposit was initially detected by plain-film radiography, performed to evaluate new onset right hip pain, as possible new cortical breakthrough with irregularity in the site of previously known proximal right femur intraosseous lipoma. Concurrent follow-up PET/CT study showed a new hypermetabolic focus within the known intraosseous lipoma indicating a new metastasis that was confirmed with an MRI as a new enhancing mass within the preexisting intraosseous lipoma. Subsequently, an MRI-guided biopsy and eventually surgical excision was performed providing the histological samples for radiologic-pathologic correlation. Purpose and Clinical Relevance: Clinicians need to be aware that unusual, complex patterns within benign lesions may be a reflection of unexpected conditions, such as insufficiency injury, malignant transformation and secondary metastatic disease, as exemplified by our case report.
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