Retroperitoneal cystic masses: magnetic resonance imaging features

Extraprostatic incidental findings on prostate mpMRI: A pictorial review from the ESUR junior network

The role of multiparametric MRI (mpMRI) in prostate cancer setting is increasingly consolidated and, as a result, its usage in clinical practice is in exponential growth. However, beyond the prostate gland, several key structures are included in the field of view of mpMRI scans. Consequently, various extra-prostatic incidental findings (IFs) belonging to different anatomical systems can be accidentally recognized. Therefore, it is mandatory for a radiologist to be familiar with the wide range of pathologies potentially encountered, to guide management and avoid patient anxiety and costs due to additional work-up prompted by clinically insignificant extra-prostatic findings. With this pictorial review, we aim to illustrate a wide range of IFs that can be detected when performing mpMRI of the prostate, focusing on their imaging characteristics, differential diagnosis, and clinical relevance. Additionally, we propose the CheckDEEP, the Checklist for DEtection of ExtraProstatic findings, to be used for a thorough evaluation of target areas within each anatomical system.

Mesenteric Lymphangioma Presenting With Small Bowel Volvulus in an Adult

Benign tumours of vascular and lymphatic origin are known as lymphangiomas. In this report, we present a case of a 26-year-old lady admitted with symptoms of small bowel obstruction. Her computed tomography (CT) scan showed a well-defined mass in the small bowel mesentery associated with small bowel volvulus. Segmental resection of the bowel, including the mass, was performed. Microscopic examination and immunohistochemistry of the specimen were consistent with lymphangioma of the small bowel mesentery.

Giant retroperitoneal myxoma: A case report and literature review

INTRODUCTION AND IMPORTANCE

Myxoma is a benign tumor and is mesenchymal in origin. Myxomas of the retroperitoneum are extremely rare entities.

CASE PRESENTATION

We here report a case of a 67-year-old male who presented with progressive abdominal distention for 3 years. Laboratory investigations revealed a reduction in erythrocytes, lymphocytes, hemoglobin, and an elevation in carbohydrate antigen 19-9. Imaging findings showed a multilocular cystic mass in the right abdomen with thin septa and internal calcifications. Laparotomy revealed that the mass had arisen from the retroperitoneum and the histological study suggested the diagnosis of myxoma.

DISCUSSION

Myxoma features as a "cystic mass" in imaging studies. Therefore, the possibility of a cystic lymphangioma, cystic mesothelioma and myxoma should be considered when a multicystic lesion in the retroperitoneal space is observed. Due to the rarity of retroperitoneal myxomas and lack of specific manifestations and diagnostic methods, preoperative diagnosis is often delayed or incorrect. And until now, only a few cases of retroperitoneal myxoma have been reported.

CONCLUSION

The report will increase the understanding of the diagnosis and treatment of retroperitoneal myxomas. A brief review of the related literature was also carried out.

Retrorectal Mucinous Adenocarcinoma Arising from a Tailgut Cyst: A Case Report

We report the case of a 57-year-old woman who presented with local invasion of the anal canal by mucinous adenocarcinoma, the malignant transformation of a long-term preexisting retrorectal tailgut cyst. This progression is infrequent and justifies preemptive surgical treatment of retrorectal cysts.