Bilateral ovarian mature cystic teratoma with unilateral malignant transformation to adenocarcinoma: A case report.

Mature cystic teratoma (MCT) is the most common germ cell tumor of the ovary, comprising 20% of all ovarian neoplasms. Malignant transformation (MT) is an uncommon complication and occurs in approximately 1-3% of all MCTs. The most common histological type of MT is squamous cell carcinoma.

Surgical management of a huge mediastinal mature teratoma in a 2-year-old girl: a case report.

Background: Mature teratomas are benign cystic tumors that are most commonly asymptomatic. However, in some cases, mediastinal teratomas rupture the lungs and mediastinum with potentially fatal outcomes. Herein, we report a case of a large mediastinal mature teratoma that expanded to the entire left hemithorax in a child with common cold-like symptoms.

Uterine teratoma and the role of short-tandem repeat genotyping in understanding origins.

Background: Uterine teratomas are a rare entity with a debated origin. Given its rarity and limitations of diagnostic imaging, diagnosis is typically determined pathologically following surgical resection based on the presence of tissue derived from all germ cell layers. Unlike its ovarian counterpart, the developmental origins are poorly understood; however, recently introduced molecular testing has revolutionized our understanding of these rare tumors.

A Rare Case of an Aggressive Mixed Germ Cell Tumor Following Testicular Torsion.

Testicular cancer is one of the leading malignancies affecting young men, with germ cell tumors (GCTs) being the most prevalent type. These tumors are classified into two main subtypes: seminomas and non-seminomatous germ cell tumors (NSGCTs), with the latter known for their higher likelihood of metastasis. Early detection through imaging and tumor markers like alpha-fetoprotein (AFP) and beta-human chorionic gonadotropin (HCG) is crucial for favorable outcomes.

Ovarian Masses in Children: Surgical Experience and Outcomes.

Aims: This study aims to review our experience of treating ovarian masses in children with an emphasis on clinical presentation, diagnosis, treatment, and outcome.

Methods: We retrospectively reviewed the electronic medical records of all patients below 18 years of age who underwent surgical treatment for ovarian masses at our institute between 2009 and 2023. Study variables included demography, clinical presentation, physical findings, tumor markers, radiologic features, operative details, histopathology, follow-up status, and overall survival.

Case Report: A rare case of antenatally diagnosed mature adrenal teratoma in an infant: insights and literature review.

Teratomas are germ cell tumors that arise from the derivatives of the three germ cell layers. They are categorized into subtypes by the extent of maturation, with mature teratomas being the most common subtype. While they can arise in various extragonadal regions, including the retroperitoneum, their occurrence in the retroperitoneal space is extremely rare.

An Atypical Presentation of a Pediatric Mature Teratoma: A Case Report and Review of the Literature.

Immature teratoma is an uncommon type of malignant tumor that mostly consists of immature tissue originating from the neuroepithelium. Mature teratomas in pediatrics are relatively rare and difficult to diagnose because of various symptoms and the tendency to overlap with other illnesses. This study aimed to report a rare case of a mature teratoma in pediatric age.

Apocrine adenocarcinoma arising from mature cystic teratoma in the anterior mediastinum: A case report.

Primary mediastinal apocrine adenocarcinoma is extremely rare, with only one case reported to date. Here, we report a surgical case of primary mediastinal apocrine adenocarcinoma. An anterior mediastinal cystic tumor with calcification was identified on chest computed tomography scan in a 51-year-old female patient undergoing maintenance hemodialysis.

Coexistence of complete intestinal tract, prostatic tissue, prostatic urethra and bladder structure in ovarian mature cystic teratoma: a case report.

Mature cystic teratomas (MCTs) of the ovary comprise tissues from all three germ layers. The coexistence of the complete intestinal tract, prostatic tissue, and bladder component within the same ovarian MCT is unprecedented. Here, we report the diagnosis and management of such a rare case.

A case of anterior mediastinal mature teratoma with severe inflammatory extension into the neck.

Background: We present the case of a rare occurrence of an anterior mediastinal mature teratoma extending into the neck, commonly referred to as a cervicothoracic mature teratoma.

Case Presentation: A 19-year-old female presented with right-sided neck pain and swelling, which were found to be attributed to a 14 cm cystic lesion originating from the right thyroid lobe and extending into the mediastinum. A diagnosis of mediastinal teratoma with extension to the neck was made.

Anti-NMDAR encephalitis with delayed ovarian teratoma in a young woman: a case report with 5 years of follow-up.

Background: Anti-N-methyl-D-aspartate receptor (NMDAR) encephalitis is an autoimmune disorder with a variety of clinical manifestations. It has been established that anti-NMDAR encephalitis may be related to ovarian teratoma in female patients. However, a considerable number of patients have no obvious evidence of ovarian teratoma during the onset of the disease.