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BMJ Case Rep. 2018 Oct 3;2018. pii: bcr-2017-223787. doi: 10.1136/bcr-2017-223787.

Borderline Mucinous Testicular Tumour: Diagnostic and Management difficulties.

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Department of Urology, Royal Brisbane and Women's Hospital, Herston, Queensland, Australia.
University of Queensland School of Medicine, Herston, Queensland, Australia.
Department of Pathology, Royal Brisbane and Women's Hospital, Herston, Queensland, Australia.


A 45-year-old man presented with right-sided testicular swelling and pain. An examination found a tender, firm right testis, a clinically normal left testis and no palpable lymphadenopathy. Tumour and inflammatory markers were within normal limits. A scrotal ultrasound scan showed an intratesticular, avascular lesion measuring 4.4×2.6×1.8 cm. A CT scan of his chest/abdomen/pelvis (CT C/A/P) showed no metastatic or primary lesions. An elective right-inguinal orchidectomy was subsequently performed. Histopathology showed a cystic mucinous tumour lined with intestinal-type epithelium. Differentials of metastatic adenocarcinoma, possibly of a gastrointestinal origin, a monodermal teratoma, or a borderline mucinous tumour of the testicle (BMTT) were considered. Following 12 p genetic studies and a colonoscopy, both of which found no abnormalities, a presumptive diagnosis of a BMTT was made. The patient is to have an annual urological review with a CT C/A/P and 5 yearly colonoscopies.


cancer intervention; urological cancer

[Indexed for MEDLINE]

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