Abstract
Background: A group of diseases related to normal or abnormal gestation that have a common denominator, the abnormal proliferation of trophoblast tissue, are generically designated gestational trophoblastic diseases (GTDs). Individual disorders differ remarkably in their appearance (morphology) and clinical significance. This study was aimed at characterizing all cases of histologically diagnosed GTDs, seen at the Histopathology Department of the Jos University Teaching Hospital (JUTH). Materials and Methods: This study was a 10-year hospital-based retrospective study employing slides and tissue blocks of specimens from uterine evacuation products of gestations of all females diagnosed with GTDs in the Histopathology Department of JUTH from January 2004 to December 2013. The materials used in the study included records from the departmental registry and archival slides and tissue blocks from the archives of the histopathology department of the hospital. Results: A total of 151 cases were diagnosed histologically as GTDs, during the period under review. These accounted for 0.8% of all the surgical pathology specimens received. A total of 151 cases of GTD histologically diagnosed met the inclusion criteria and translated to 5.7 cases/ 1000 pregnancies. The following histological subtypes were seen: 63 cases (41.7%) were diagnosed as partial hydatidiform mole (PHM), 42 cases (27.8%) were choriocarcinoma, and 35 cases (25.8%) were diagnosed as complete hydatidiform mole. Four cases diagnosed as invasive mole accounted for 2.7%, which is closely followed by 3 cases of placental site trophoblastic tumor, accounting for approximately 2% of GTDs. However, no case of epithelioid trophoblastic tumor was seen. Conclusion: GTD was found to be common in Jos and had a frequency of 5.7 cases/1000 pregnancies in our series. The most common histological subtype was PHM, closely followed by choriocarcinoma. The molar lesions peaked in the second and third decades, while choriocarcinoma peaked in the second decade of life.
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