Case Report


Unprecedented presentation of pelvic synovial sarcoma: A compelling case report

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1 MD, Radiology Department, Ibn Sina Teaching Hospital, Mohammed V University, Rabat, Morocco

2 MD, Radiology Department, National Institute of Oncology, Ibn Sina Teaching Hospital, Mohammed V University, Rabat, Morocco

3 MD, Professor, Radiology Department, National Institute of Oncology, Ibn Sina Teaching Hospital, Mohammed V University, Rabat, Morocco

Address correspondence to:

Chaimae Lahlou

MD, Radiology Department, Ibn Sina Teaching Hospital, Mohammed V University, Rabat,

Morocco

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Article ID: 100137Z10CL2024

doi: 10.5348/100137Z10CL2024CR

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How to cite this article

Lahlou L, Ihssan HH, Kaoutar M, Hatim E, Assad EB, Soukaina A, Hounaida J, Youssef O, Rachida L. Unprecedented presentation of pelvic synovial sarcoma: A compelling case report. J Case Rep Images Oncology 2024;10(2):20–25.

ABSTRACT


Synovial sarcoma (SS) is a rare tumor that typically arises in various body regions, with its manifestation in the abdominal-pelvic area being exceptionally uncommon. However, despite its rarity in this location, it often metastasizes to the thorax. Despite its slow growth, it can be misdiagnosed as benign in less than 10% of cases. Diagnosis necessitates identification of the SYT-SSX fusion transcript, alongside immunohistochemical and cytogenetic assessments. Treatment involves surgical resection followed by radiotherapy for localized tumors, while chemotherapy is necessary for metastatic cases. Despite treatment, synovial sarcomas have a high recurrence rate, with about half recurring within two years. We report the case of a 73-year-old patient from sub-Saharan Africa who presented to the emergency room with obstructive symptoms, revealing a mass near the anus compressing the rectum upon imaging, causing an obstructive syndrome. Despite initial tumor resection, histological analysis identified a neurofibromatous origin. Twenty months later, recurrence prompted a hospital visit, revealing thoracic metastases necessitating surgery and chemotherapy. Subsequent analysis confirmed perianal synovial sarcoma. This case underscores the rarity of pelvic-anal synovial sarcoma and emphasizes the importance of early detection and proper management. Synovial sarcoma should figure prominently on the list of differential diagnoses of high-grade pelvic masses due to the importance of adjuvant chemotherapy.

Keywords: Immunohistology, MRI, Pelvic synovial sarcoma, Surgery

SUPPORTING INFORMATION


Author Contributions

Chaimae Lahlou - Substantial contributions to conception and design, Acquisition of data, Analysis of data, Interpretation of data, Drafting the article, Final approval of the version to be published

Hadj Hssain Ihssan - Substantial contributions to conception and design, Interpretation of data, Drafting the article, Final approval of the version to be published

Meslouhi Kaoutar - Substantial contributions to conception and design, Interpretation of data, Drafting the article, Final approval of the version to be published

Essaber Hatim - Substantial contributions to conception and design, Analysis of data, Interpretation of data, Drafting the article, Final approval of the version to be published

El Bakkari Assad - Interpretation of data, Revising it critically for important intellectual content, Final approval of the version to be published

Allioui Soukaina - Interpretation of data, Revising it critically for important intellectual content, Final approval of the version to be published

Jerguigue Hounaida - Interpretation of data, Revising it critically for important intellectual content, Final approval of the version to be published

Omor Youssef - Interpretation of data, Revising it critically for important intellectual content, Final approval of the version to be published

Latib Rachida - Interpretation of data, Revising it critically for important intellectual content, Final approval of the version to be published

Guaranter of Submission

The corresponding author is the guarantor of submission.

Source of Support

None

Consent Statement

Written informed consent was obtained from the patient for publication of this article.

Data Availability

All relevant data are within the paper and its Supporting Information files.

Conflict of Interest

Authors declare no conflict of interest.

Copyright

© 2024 Hadj Hssain Ihssan et al. This article is distributed under the terms of Creative Commons Attribution License which permits unrestricted use, distribution and reproduction in any medium provided the original author(s) and original publisher are properly credited. Please see the copyright policy on the journal website for more information.