Journal: Oncology Letters
Article Title: Proliferative escalation and possible neuroendocrine carcinoma transformation in pulmonary metastases of a cervical neuroendocrine tumor: A case report
doi: 10.3892/ol.2026.15501
Figure Lengend Snippet: Histopathological and immunohistochemical findings of the cervical tumor. (A) H&E staining (ocular, ×10; objective, ×4; final magnification, ×40) showing mixed histology. (B) H&E staining (ocular, ×10; objective, ×10; final magnification, ×100) revealing coexistence of adenocarcinoma and neuroendocrine components. (C) H&E staining of the neuroendocrine component (ocular, ×10; objective, ×40; final magnification, ×400). (D-L) Immunohistochemical analysis of the neuroendocrine component (ocular, ×10; objective, ×40; final magnification, ×400) revealing the following: (D) Synaptophysin, positive; (E) chromogranin A, positive; (F) p16, positive; (G) yes-associated protein 1, negative; (H) thyroid transcription factor-1, negative; (I) retinoblastoma protein, wild-type expression; (J) paired box 8, negative; (K) Ki-67, low proliferative activity; and (L) Ki-67, hotspot with high proliferative activity.
Article Snippet: For the immunostaining shown in , chromogranin A (catalog no. 412751; Nichirei) was used at a dilution of 1:1.
Techniques: Immunohistochemical staining, Staining, Expressing, Activity Assay