Differential Diagnosis of Tumors in the Adrenogenital Syndrome
| Autor: | Pilar González-Peramato, Manuel Nistal, Álvaro Serrano |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Pathology medicine.medical_specialty Leydig cell business.industry Hyperandrogenism medicine.disease 03 medical and health sciences 030104 developmental biology 0302 clinical medicine medicine.anatomical_structure Mediastinum testis Leydig Cell Tumor Rete testis 030220 oncology & carcinogenesis Parenchyma Adrenogenital syndrome medicine Differential diagnosis business |
| Zdroj: | Clues in the Diagnosis of Non-tumoral Testicular Pathology ISBN: 9783319493633 |
| DOI: | 10.1007/978-3-319-49364-0_7 |
| Popis: | The differential diagnosis of testicular tumors of the adrenogenital syndrome (TTAGS) with Leydig cell tumors (LCT) is not always easy. In childhood, both tumors show a pattern of hyperandrogenism, and the symptoms can be similar. The macroscopic clues in favor of TTAGS are the bilateral nature of the tumors and its location in the mediastinum testis. Among the histological data, the good delineation of the tumor nodules is outstanding: sheets of large polygonal cells with an eosinophilic cytoplasm intersected by broad fibrous bands, abundant lipofuscins, the absence of mitosis, and the presence of fat and lymphoid tissue. The peritumoral parenchyma does not show spermatogenesis. Adults often consult by infertility secondary to obstruction of the tubuli recti that are compressed by the tumor nodules. TTAGS and Leydig cell tumors share the same immunohistochemical phenotype (calretinin, inhibin, synaptophysin, and CD56) although there are differences in the intensity of positivity and the distribution of the expression – focal versus diffuse in some cases. The absence of androgen receptors and expression of INSL3 constitute the most relevant histological differential fact. |
| Databáze: | OpenAIRE |
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