Adenomatoid Tumor of the Tunica Albuginea in a Boy: A Case Report and Literature Review

Abstract

Adenomatoid tumors (AT) are the most common paratesticular neoplasms and account for approximately 30% of all paratesticular masses. Most of them occur in the third or fourth decade and present as well-defined firm and painless masses. We report here a case of adenomatoid tumor from tunica albuginea. This patient is a 12-year-old boy with left testicular pain for 6 months. Scrotal ultrasonography revealed a solid mass of paratesticular origin. The histology and immunohistochemistry confirmed the final diagnosis. A right tumor resection was performed. Because of its rarity, the clinical and histopathologic appearance is seldom illustrated. Here we present a case report and a comprehensive literature review with the objective of providing useful information on this entity.

Figure 1

Scrotal ultrasonography of AT: scrotal ultrasound scan revealing a 10 × 8 mm, hyperechoic solid mass in the upper pole of the left testicle.

Figure 2

HE staining of AT: (a) hematoxylin-eosin stain of tumor biopsy showing tumor cells lined in irregular, glandular pattern, and fibrous tissue proliferation in stroma with unclear margins (×100); (b) the neoplastic cells had round to polygonal outlines, moderate to abundant pale to vacuolated cytoplasm with round or oval nuclei. No mitoses were seen (hematoxylin-eosin, ×200).

Figure 3

Immunostaining of adenomatoid tumors. (a) Calretinin (+); (b) cytokeratin (+); (c) vimentin (+) (×200).