Background: In 2018, ovarian carcinoma ranked as the eighth most common cancer diagnosed and the leading cause of cancer death in women. High-grade serous carcinoma is the most common histological type seen among malignant cases. A diverse group of neoplasms is seen in the ovary with variable clinical, morphological, and histological features, so assessing the nature of ovarian neoplasms further assists in the treatment of the disease. Aim: This study was conducted to assess the different histopathological variants of ovarian neoplasms according to the latest 2020 World Health Organization (WHO) classification of ovarian tumors. Further analysis of the frequency, age, clinical features in patients, and distribution of various ovarian tumors is assessed. Materials and methods: A retrospective study was conducted in the Department of Pathology at Patna Medical College and Hospital (PMCH), Patna. The data of the patients from the past three years, from February 2020 to February 2023, were retrieved and assessed. Gross and microscopic findings, including clinical details of patients with ovarian masses, were analyzed from the previous records. Result: A total of 110 cases of ovarian neoplasms on histopathology were analyzed. The age range was 11-70 years. The types of specimens received were those of total abdominal hysterectomy, salphingoopherectomy, and unilateral or bilateral ovarian cystectomy. The most common presentation was an abdominal mass, followed by pain in the abdomen. The majority of the tumors were benign (69%), malignancy was observed in 24.5% of cases, and borderline tumors were seen in 5.4% of cases. Epithelial tumors were the commonest tumors, accounting for 70%, followed by germ cell tumors (21%). Serous cystadenoma was the commonest benign tumor, followed by mature teratoma and serous cystadenocarcinoma. High-grade serous cystadenocarcinoma was the commonest malignant ovarian tumor (9%), followed by low-grade serous cystadenocarcinoma (4.5%) and metastatic carcinoma of the ovary. Krukenberg tumor was seen in two cases, and a very rare case of sclerosing stromal tumor was seen in one of the cases. Conclusion: Ovarian neoplasms usually present with a variety of clinicomorphological and histological features. The most common neoplasm observed in the ovary is surface epithelial tumors, which are benign lesions that commonly affect reproductive age groups. Newer advancements like immunohistochemistry (IHC) and genetic studies have made the diagnosis easier and more precise. However, in institutes with limited resources, a histopathological study is still the gold standard in the diagnosis and prognostic evaluation of these tumors.
Peripheral nerve sheath tumors are relatively common lesions that exhibit a wide morphological and biological spectrum. In the presence of classical morphological and immunohistochemical features, the histological diagnosis is usually straightforward, but they may represent diagnostic challenges. Schwannoma is a slow growing encapsulated tumor of neuroectodermal derivation that originates from the Schwann cells of the neural sheath. Most commonly presents as cerebellopontine angle mass but extracranial sites are known and needs to be considered in the differential diagnosis. Intraparotid and penile schwannomas are extremely rare. Their diagnosis could be missed on cytology due to cystic changes. Isolated plexiform neurofibroma of the tongue is again a rare tumor. Plexiform pattern recognition is important for the pathologist as these varients might show malignant transformation. Overall Fine needle aspiration cytology though inconclusive at times, help a lot initially to delineate between benign Vs malignant lesions. Moreover its minimally invasive so can be performed easily at the uncommon locations. Histopathology remains the gold standard. Clinicopathological and imaging correlation is must for definite diagnosis and treatment.
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