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- W2891675908 abstract "Walthard cell rests were first described in 1903 by the Swiss gynecologist Max Walthard. They represent benign epithelial clusters found commonly on the surface of the fallopian tube and posterior aspect of the broad ligament. Isolated cases of Walthard rests have been described in the paratesticular structures such as tunica albuginea, epididymis, and the testes. The origin of Walthard rests has been debated in the literature; various proposed theories include Müllerian remnants, mesothelial metaplasia, and metaplastic urothelium. In the era of immunohistochemistry, we can confidently recognize Walthard cell rests and differentiate them from histologically mimicking tumors. Here we report a case of Walthard rests presenting as a cystic lesion in a 55-year-old man who presented with signs and symptoms of inguinal hernia. Right herniorrhaphy was performed, and intraoperatively a cystic mass arising from the spermatic cord was identified. The cystic mass measured 2.0 × 1.0 × 1.9 cm, and histological examination revealed a multicystic lesion composed of variably sized cysts lined by one to few layers of round to low cuboidal cells with small nuclei. No mitosis, necrosis, or papillary formation was identified. Immunohistochemical studies performed revealed the lining cells to be positive for CK7, CK5/6, and GATA3, in keeping with a staining pattern reminiscent of Walthard nest immunophenotype. SALL4 and PAX8 were performed to exclude lesions of testicular and genitourinary origin, and they were negative. To our knowledge, this unique anatomic location and presentation for Walthard rests has not been previously described. Identifying these lesions and differentiating them from malignancies common in the same age group is vital to patients’ management." @default.
- W2891675908 created "2018-09-27" @default.
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- W2891675908 date "2018-09-21" @default.
- W2891675908 modified "2023-09-27" @default.
- W2891675908 title "Cystic Walthard Rests Presenting as a Spermatic Cord Lesion—An Extremely Rare Anatomic Presentation and Potential Diagnostic Pitfall" @default.
- W2891675908 doi "https://doi.org/10.1093/ajcp/aqy090.001" @default.
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