Pseudotumor fibroso de la túnica vaginal multinodular: una rara lesión testicular.

BACKGROUND: Fibrous pseudotumor is a rare benign lesion, reactive in nature, which can appear in the form of nodules (single or multiple) or diffusely in the testicular tunics. Clinically it simulates a malignant tumor, so the treatment consists of radical orchiectomy. CLINICAL CASE: A 70-year-old man, who came to the clinic due to an increase in testicular volume of several months of evolution. Ultrasound revealed a right simple hydrocele, 170 cm3. Treatment consisted of hydrolectomy, using the right hemiscrotal technique. In the surgical act, multiple nodules adhered to the tunica vaginalis and albuginea were evidenced. Immunohistochemistry showed positivity for caldesmon and CK (AE1 / AE3), and negativity for desmin, actin, CD34, CD31, calretinin, EMA, CK7, CK5 / 6 and WT1. The final diagnosis was: multiple nodular fibrous pseudotumor. CONCLSUIONS: It is important to know the fibrous pseudotumor, since when obtaining an intraoperative biopsy it can be confused with a high-grade lesion. The possibility of IgG4 disease should be ruled out, because it is a systemic disease that can affect any location. [ABSTRACT FROM AUTHOR]