Serous ovarian tumors: Immunohistochemical profiling as an aid to grading and understanding tumorigenesis |
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| Institution: | 1. Associate Professor & Head (Pathology), INHS Asvini, Colaba, Mumbai 400005, India;2. Defence Services Medical Research Center, Nay Pyi Taw, Myanmar;3. Scientist ''E'', Department of Pathology, Armed Forces Medical College, Pune 411040, India;4. Brig I/C Adm, Command Hospital (Southern Command), Pune 411040, India;1. Consultant (Surgery), King Hussein Medical Center, Amman 11831, Jordan;2. Senior Specialist (Pathology), King Hussein Medical Center, Amman 11831, Jordan;3. Specialist (Surgery), King Hussein Medical Center, Amman 11831, Jordan;4. Senior Specialist (Internal Medicine and Endocrinology), King Hussein Medical Center, Amman 11831, Jordan;5. Senior Resident (Surgery), King Hussein Medical Center, Amman 11831, Jordan;6. Senior Specialist (Surgery), King Hussein Medical Center, Amman 11831, Jordan;1. Assitant Professor, Army College of Medical Sciences, New Delhi, India;2. Professor & Head, Department of Pathology, Armed Forces Medical College, Pune, 411040, India;1. Senior Advisor (Nephrology), Army Hospital (Research & Referral), Delhi, India;2. Senior Resident (Nephrology), Army Hospital (Research & Referral), Delhi, India;3. Classified Specialist, (Nephrology), Army Hospital (Research & Referral), Delhi, India;1. IFH Level-II, Malakal, South Sudan (UNMISS);2. Resident, Dept of Obst & Gyn, Armed Forces Medical College, Pune 411040, India;3. Associate Professor, Dept of Obst & Gyn, Armed Forces Medical College, Pune 411040, India;1. Commandant and Command Dental Adviser (Southern Command), Pune 411040, India;2. Consultant (Prosthodontics), Command Military Dental Centre (Southern Command), Pune 411040, India;3. Classified Specialist (Periodontics), Command Military Dental Centre (Southern Command), Pune 411040, India;4. Classified Specialist (Prosthodontics), Command Military Dental Centre (Southern Command), Pune 411040, India |
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| Abstract: | BackgroundThe aim of this study was to evaluate the expression of p53, p16, Wilms tumor gene (WT1), and Mindbomb E3 Ubiquitin Protein Ligase 1 (MIB-1) index by immunohistochemical (IHC) staining in benign, low-grade, and high-grade serous ovarian tumors.MethodsForty-one cases of ovarian serous tumors were included in the study (benign serous tumor n = 10], low-grade ovarian serous carcinoma n = 8], and high-grade ovarian serous carcinoma n = 23]). Expression of p53, p16, WT1, and MIB-1 by IHC was evaluated statistically with the grade of tumor. Semiquantitative scoring system for percentage (0–5) and intensity (1–3) of staining pattern was used to bring about objectivity.Resultsp53, p16, and WT1 showed significantly higher staining scores in ovarian serous carcinoma group than in the benign group (p < 0.05). However, p16 score was not significant in benign versus low-grade tumors. In the carcinoma group, the high-grade serous tumors showed significantly higher staining scores of p53, p16, and WT1 than the low-grade serous tumors (p < 0.05). Papillary serous tumors had comparatively lower p53 and WT1 scores for the same grade of tumor. MIB-1 scores were not significant.Conclusionp53, p16, and WT1 are helpful for the subtyping of serous ovarian tumors as low grade and high grade. WT1 is helpful in establishing primary ovarian serous tumors. The combination of moderate-to-high p53 and WT1 scores provides a robust way of confirming high-grade tumors. |
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| Keywords: | Immunohistochemistry (IHC) Ovary Serous carcinoma |
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