Testicular metastases from prostate carcinoma

Testicular metastasis of prostate adenocarcinoma: the other side of orchiepididymitis

Background

Metastatic prostate adenocarcinoma is a rare event and there are few references to this topic. We report an unusual case of prostate cancer metastasis and review of contemporary literature. Moreover, we discuss the pathogenesis and the clinical aspects of this event.

Case presentation

A 70-year-old patient was admitted to the hospital for right scrotal pain. The ultrasound examination described an increase in testicular size, suggesting the possibility of orchiepididymitis. Past medical history reported a previous prostate adenocarcinoma. Inflammatory blood tests were normal. Importantly, PSA was 3.3 ng/ml. PET scan positivity in the scrotum raised suspicion of a relapse. Therefore, he underwent right orchiectomy.

Conclusion

Although metastatic prostate adenocarcinoma is rare, a correct diagnosis is of paramount importance because the therapy changes accordingly. Patients who complain of scrotal pain need to be examined accurately. Although the most common cause behind this symptom is infectious, the patient's past medical history should be reviewed to exclude previous malignancies.

[Secondary tumors localized in testis]

Testis tumors are uncommon in oncology, and testicular metastasis from distant solid tumors are even rarer. We present two cases encountered in our department of pathology in CHU de Rennes, France. Moreover, we collected all reported cases in the Medline/PubMed databases of non-hematopoietic secondary testis tumors in adults, excluding autopsy studies, to propose an integrative study on this topic. In total, we report 98 cases of secondary testis lesions to prostate (n=38, 38.77 %), colorectal (n=19, 19.39%), gastric (n=12, 12.24%), kidney (n=7, 7.14%), lung (n=6, 6.12%) and other primary cancers. The median age at diagnosis was 66.5 years. We identified significantly more prostate adenocarcinoma (P<0.0001) when the primary tumor was known and significantly more colorectal adenocarcinoma (P=0.035) and pancreatic adenocarcinoma (P=0.002) when the primary tumor was unknown. The age at diagnosis was older when the primary tumor was known (P=0.007). We present the challenges for the diagnosis and propose some elements for diagnosis orientation. Finally, we discuss the possible ways of metastatic dissemination from primary site to testis, as illustrated by the two cases we present.

Testicular Metastasis From Prostate Cancer Demonstrated on PSMA PET/CT

ABSTRACT

Testicular metastasis from prostate cancer is rarely reported in radiology literature. We present the case of an 84-year old man with history of prostate cancer, who obtained an 18 F-Pylarify PET/CT for biochemical recurrence, with an incidentally detected prostate-specific membrane antigen-avid large right testicular mass. The 18 F-Pylarify PET/CT showed no evidence of local prostate tumor recurrence in the prostate bed, but demonstrated small right common and external lymph node metastases in addition to the incidentally noted large right testicular mass. The patient underwent orchiectomy with subsequent histopathologic examination confirming metastasis from prostate cancer.

A young patient with prostatic carcinoma with testicular metastasis

Prostate cancer is one of the most frequent cancers in males and commonly a disease of the older population, but it is increasingly seen among older adolescents and young adults. The common sites of metastasis of prostatic carcinoma are bones and regional lymph nodes. Testicular metastasis from prostatic carcinoma is an infrequent presentation. We report a case of a young patient with prostatic carcinoma and multiple metastases, including bilateral testis. A 40-year-old male presented with lower urinary tract voiding symptoms and back pain for three months. His prostate-specific antigen level was elevated at 13.98 ng/ml. A magnetic resonance imaging of the prostate revealed two PIRADS V lesions and metastases in multiple bones and regional lymph nodes. On follow up, the patient complained of bilateral testicular swelling and ultrasound scan of the testes revealed bilateral testicular metastasis. Fine needle aspiration cytology of right-side testicular lesion revealed malignant cells compatible with metastasis from prostate cancer. Later involvement of multilevel vertebral and skull metastases was identified by magnetic resonance imaging. A T_3bN₁M1_c staging of prostate cancer was made, androgen deprivation therapy followed by chemo and radiotherapy was instituted, following extensive discussion with the patient. Unfortunately the patient succumbed to the illness during the course of treatment. This case report is of a patient with rare presentation of bilateral testicular metastasis with prostate cancer in young age.

Prostate cancer involving bilateral seminal vesicles along with bone and testicular metastases: a case report

BACKGROUND

In the past 20 years, the incidence of prostate cancer has risen rapidly. It has been ranked as the third most common malignant tumor of the male genitourinary system. Testicular metastasis is uncommon in prostate cancer. Most cases are incidentally found in the treatment of prostate cancer with orchiectomy. Therefore, we believed it was necessary to report the case of our patient with this disease.

CASE PRESENTATION

We present a case of a 69-year-old Han Chinese man with a high total prostate-specific antigen level. A transrectal ultrasound-guided prostate biopsy was performed. A pathology report showed prostate cancer tissue with a Gleason score of 4 + 4 = 8/10. Imaging findings suggested that the prostate cancer tissue involved bilateral seminal vesicles and multiple bones. Next, radioactive seed implantation was carried out, and endocrine therapy was continued after the operation. Then enlargement of the left scrotum was found along with a total prostate-specific antigen level of 19.21 ng/ml. Computed tomography of the middle abdomen and pelvic cavity revealed 2.0 × 1.3-cm lesions of the left testis. The patient underwent a left testicular high resection and right orchiectomy. The postoperative pathology report showed metastatic prostate cancer cells in the left testis.

CONCLUSIONS

Testicular metastasis of prostate cancer is rare. Therefore, a testicular physical examination is necessary for patients without relapse to avoid a missed diagnosis. Testicular metastasis should be treated according to the principle of treatment for advanced prostate adenocarcinoma if testicular metastasis of prostate adenocarcinoma is detected.

Prostate cancer with metastases to the kidney: a rare manifestation of a common disease

A 66-year-old Caucasian man with a background of prostate cancer presented with a progressive history of nausea, reduced appetite, shortness of breath and a distended abdomen. Radiological imaging revealed a left-sided renal mass and gross ascites suggestive of metastatic renal cell carcinoma (RCC). Subsequent histological examination and immunostaining of renal mass biopsy revealed features characteristic of metastatic moderately differentiated to a focally poorly differentiated, large duct type of prostatic adenocarcinoma.