Extragonadal germ cell tumors (EGGCTs) are uncommon neoplasms, which arise in anatomical locations other than gonads. The pathogenesis of these neoplasms is still poorly understood and it is a matter of debate if they really represent extragondal primary neoplasms or rather extragondal metastasis from occult gonadal neoplasms. The actual observations suggest that EGGCTs represent a unique entity, so their biology and behavior are substantially different from gonadal counterparts. The diagnosis of EGGCTs is often challenging, and differential diagnosis is particularly wide. Nevertheless, a correct diagnosis is essential for the correct management of the patient. We summarize the state of art about EGGCTs, with particular emphasis on diagnosis and prognosis.
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http://dx.doi.org/10.1002/cam4.2195 | DOI Listing |
Arch Gynecol Obstet
January 2025
Department of Obstetrics and Gynecology, National Clinical Research Center for Obstetric & Gynecologic Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
Purpose: To provide a comprehensive understanding and propose a strategy for the management of extragonadal malignant germ cell tumors (EMGCTs) arising from extracranial and nonvaginal sites.
Methods: We retrospectively reviewed the cases of 12 patients with EMGCTs arising from extracranial and nonvaginal sites treated in our center over the past 38 years. Data on clinicopathological characteristics, treatment modalities, and follow-up information were analyzed.
Hinyokika Kiyo
December 2024
The Department of Urology, Kurashiki Central Hospital.
The patient was a 21-year-old man with a shadow on a chest roentgenogram taken during a medical checkup. According to blood testing, thoracoabdominal computed tomography, head magnetic resonance imaging, and lung tumor biopsy, we diagnosed a primary retroperitoneal germ cell tumor with multiple lung and brain metastases. Induction chemotherapy (4 courses of Bleomycin, Etoposide and Cisplatin) was started immediately.
View Article and Find Full Text PDFHistopathology
January 2025
Department of Diagnostic and Molecular Pathology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
Aims: Extragonadal yolk sac tumour (YST) is rare, and may present a diagnostic challenge. YST differentiation was recently reported in some somatically derived tumours in the sinonasal location and in the female genital tract, together with a SMARCB1/INI1 loss. We report two paratesticular/inguinal tumours with striking morphological and immunohistochemical similarities with YST, further expanding the spectrum of extragonadal tumours with YST-like morphology and SMARCB1/INI1 loss.
View Article and Find Full Text PDFCase Rep Surg
December 2024
Institute of Surgical Gastroenterology, GI and HPB Oncosurgery and Liver Transplant, Sir Ganga Ram Hospital, New Delhi, India.
Primary retroperitoneal seminoma is an exceedingly rare type of germ cell tumor, accounting for less than 5% of all such tumors. These tumors are typically large at presentation due to their slow growth and the nonspecific nature of symptoms, which often leads to delayed diagnosis. A 40-year-old male presented with intermittent abdominal pain and a palpable lump in the right paraumbilical region.
View Article and Find Full Text PDFCureus
November 2024
Oncology, University Hospital Waterford, Waterford, IRL.
Non-gestational choriocarcinoma is an extremely rare and highly aggressive malignant tumor that arises independent of gestational events, making less than 0.6% of all ovarian germ cell tumors. Unlike the more common gestational choriocarcinoma, which is associated with pregnancy, non-gestational choriocarcinoma originates from germ cells within the ovary.
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