Primary solid neoplasms of the extratesticular tissues are rare. The reported prevalence rate of paratesticular neoplasms is between 3% and 16% of all patients referred for scrotal ultrasonography. A plasmacytoma is a discrete, solitary mass of malignant monoclonal plasma cells that can arise in any part of the body. In this report, we present a case of a paratesticular solid mass detected in an 80-year-old patient that proved to be primary extraosseous plasmacytoma on surgery, and discuss its sonographic features.
[Show abstract][Hide abstract] ABSTRACT: Extratesticular neoplasms are rare but clinically significant lesions that affect patients of all ages. These neoplasms are generally asymptomatic but may have potentially life-threatening sequelae. Lipoma is the most common primary benign paratesticular neoplasm and the most common tumor of the spermatic cord. Adenomatoid tumor is the most common tumor of the epididymis, followed by leiomyoma. In adult patients, it is imperative to consider sarcomas in the differential diagnosis of all solid tumors of the scrotum. The most common sarcomatous tumors in pediatric patients are embryonal sarcoma and rhabdomyosarcoma. Metastases, particularly from testicular, prostatic, renal, and gastrointestinal primary malignancies, can also occur. Mimics of paratesticular neoplasms including polyorchidism and splenogonadal fusion are rare but must also be considered for optimal management. Ultrasonography (US) is currently the imaging modality of choice. However, US findings are often variable and nonspecific and do not usually allow definitive characterization. Specific computed tomographic and magnetic resonance imaging findings with respect to tumor location, morphologic features, and tissue characteristics can aid in the evaluation of paratesticular neoplasms and help narrow the differential diagnosis.
[Show abstract][Hide abstract] ABSTRACT: Extramedullary plasmacytomas of the testes are extremely rare tumors, especially when occurring in the absence of precocious or concurrent diagnosis of multiple myeloma. This is a case report of an 83-year-old man with a solitary plasmacytoma of the left testis. Immunoperoxidase studies, performed on his-tologic specimens after radical orchiectomy, showed a monoclonal staining of intracellular immunoglobulin for IgG-λ type. He has been well for more than 14 months with no evidence of local recurrence or multiple myeloma.
Journal of ultrasound in medicine: official journal of the American Institute of Ultrasound in Medicine 01/2006; 24(12):1721-5. · 1.54 Impact Factor
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