|Year : 2023 | Volume
| Issue : 1 | Page : 63-64
Primary mesenchymal chondrosarcoma of the mediastinum with adrenal metastasis: A rare scenario
Nihit Mhatre1, Shantanu Pande2, Shashikant Patne3, Megha Bansal3
1 Department of Nuclear Medicine, Homi Bhabha Cancer Hospital and Mahamana Pandit Madan Mohan Malaviya Cancer Centre (Units of Tata Memorial Centre), Varanasi, Uttar Pradesh, India
2 Department of Nuclear Medicine, All India Institute of Medical Sciences, Nagpur, Maharashtra, India
3 Department of Pathology, Homi Bhabha Cancer Hospital and Mahamana Pandit Madan Mohan Malaviya Cancer Centre (Units of Tata Memorial Centre), Varanasi, Uttar Pradesh, India
|Date of Submission||21-Nov-2021|
|Date of Decision||15-Jan-2022|
|Date of Acceptance||17-Jan-2022|
|Date of Web Publication||24-Feb-2023|
Dr. Nihit Mhatre
Department of Nuclear Medicine, MPMMCC/HBCH, Units of Tata Memorial Centre, Varanasi - 221 005, Uttar Pradesh
Source of Support: None, Conflict of Interest: None
| Abstract|| |
Mesenchymal chondrosarcoma (MC) is a rare malignant tumor that represents <3% of all chondrosarcomas. Herein, we describe extraskeletal MC involving the mediastinum in a 24-year-old gentleman with a rare phenomenon of adrenal metastasis.
Keywords: Adrenal gland, cartilaginous tumor, F18-2-fluoro-2-deoxy-glucose positron-emission tomography/computed tomography
|How to cite this article:|
Mhatre N, Pande S, Patne S, Bansal M. Primary mesenchymal chondrosarcoma of the mediastinum with adrenal metastasis: A rare scenario. Indian J Nucl Med 2023;38:63-4
|How to cite this URL:|
Mhatre N, Pande S, Patne S, Bansal M. Primary mesenchymal chondrosarcoma of the mediastinum with adrenal metastasis: A rare scenario. Indian J Nucl Med [serial online] 2023 [cited 2023 Mar 28];38:63-4. Available from: https://www.ijnm.in/text.asp?2023/38/1/63/370432
A 24-year-old male complained of breathlessness, disturbed sleep, weight loss, and loss of appetite of 1-month duration. A contrast-enhanced computed tomography (CT) scan of the chest revealed a large mass in the mediastinum with calcific changes and filling defects in the superior vena cava and right atrium. A CT-guided biopsy from the mediastinal mass was done. H and E-stained photomicrographs show atypical cartilaginous tumor mixed with a mesenchymal area of malignant round cells [Figure 1]h and [Figure 1]i. Immunohistochemistry showed positive nuclear staining with S-100 protein in atypical cartilage [Figure 1]j and membranous positivity of CD99 in mesenchymal cells [Figure 1k], consistent with mesenchymal chondrosarcoma (MC).
|Figure 1: F18-2-fluoro-2-deoxy-glucose (FDG) positron-emission tomography/computed tomography showed a large mediastinal soft tissue mass (a-g, white arrows) with extensive calcifications and increased peripheral FDG uptake. An FDG -avid soft tissue mass was noted in the right suprarenal region (a-g, blue arrows), also showing central calcification (d). H and E-stained photomicrographs show atypical cartilaginous tumor mixed with mesenchymal area of malignant round cells (h-i). Immunohistochemistry showed positive nuclear staining with S-100 protein in atypical cartilage (j) and m. Membranous positivity for CD99 in mesenchymal cells (k)|
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F18-2-fluoro-2-deoxy-glucose (FDG) positron-emission tomography with CT (PET/CT) for staging was done. FDG PET/CT showed a large mediastinal soft tissue mass [Figure 1a-g, white arrows] measuring 14.3 cm × 17 cm with extensive calcifications and increased peripheral FDG uptake with a maximum standard uptake value (SUVmax) of 8.57. An FDG avid soft tissue mass was noted in the right suprarenal region [Figure 1a-g, blue arrows], also showing central calcification [Figure 1d], measuring 3.5 cm × 3.2 cm with SUVmax of 7.64. The right adrenal gland was not visualized separately.
MC is a rare malignant tumor that represents <3% of all chondrosarcomas. Reports of metastasis of MC to unusual sites such as adrenal, pancreas, and thyroid are few in the published literature.,,, Detection of adrenal metastasis on PET/CT in case of extraskeletal MC is however not reported. Histopathologic evidence of the adrenal metastasis was not achievable as the patient was lost to follow-up; however, the imaging features suggest this possibility given the overall scenario.
Declaration of patient consent
The authors certify that they have obtained all appropriate patient consent forms. In the form, the patient has given his consent for his images and other clinical information to be reported in the journal. The patient understands that name and initials will not be published and due efforts will be made to conceal identity, but anonymity cannot be guaranteed.
Financial support and sponsorship
Conflicts of interest
There are no conflicts of interest.
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