Related Experiment Video
Updated: Feb 15, 2026

11:11
Isolation of Sertoli Cells and Peritubular Cells from Rat Testes
Published on: February 8, 2016
23.5K
Case report: an identical twin with Sertoli-Leydig cell tumor
Kristy Cho1, Jon C Havelock1,2, Blake Gilks3
1a Department of Obstetrics and Gynaecology, Division of Reproductive Endocrinology and Infertility , University of British Columbia , Vancouver , Canada.
Summary
A rare Sertoli-Leydig cell tumor (SLCT) was diagnosed in a woman with virilization. Genetic testing for the DICER1 mutation was crucial for her identical twin's management.
Area of Science:
- Endocrinology
- Gynecologic Oncology
- Medical Genetics
Background:
- Sertoli-Leydig cell tumors (SLCTs) are rare sex-cord ovarian neoplasms.
- They can cause significant hormonal disturbances, including virilization and amenorrhea.
- SLCTs are associated with an increased risk of endometrial hyperplasia and malignancy.
Observation:
- A 43-year-old woman presented with a 2-year history of virilization and secondary amenorrhea.
- Elevated serum total testosterone was noted, but imaging failed to identify adnexal or adrenal masses.
- Ovarian vein sampling revealed unilateral testosterone hypersecretion.
Findings:
- Laparoscopic unilateral oophorectomy confirmed the diagnosis of SLCT.
- The patient's identical twin underwent DICER1 mutation testing, which was essential for her clinical management.
- This case highlights the importance of considering genetic factors, such as the DICER1 mutation, in the context of SLCT.
Implications:
- This case underscores the diagnostic challenges and management strategies for androgen-secreting ovarian tumors.
- It emphasizes the clinical significance of the DICER1 mutation in familial cases of SLCT.
- Early identification and management are crucial due to the potential for associated endometrial pathology and malignancy.
Related Concept Videos
Trigonometric Identities II
435
Double-angle and half-angle trigonometric identities are derived from the fundamental sum and difference formulas and serve as essential tools for simplifying expressions, solving equations, and evaluating integrals. These identities reduce the complexity of trigonometric functions by relating functions of a multiple or fractional angle to functions of a single angle. Their applications extend across mathematics, physics, and engineering, particularly in Fourier analysis, wave mechanics, and...
435
Personal Identity
475
Personal identity is the deeply felt sense of self that individuals cultivate over time, intricately woven from intrinsic qualities they consider essential to their existence—qualities such as morality, intelligence, and friendliness. These attributes serve as vital internal benchmarks, guiding individuals in evaluating whether their actions resonate with their true selves.When personal identity takes center stage in one's life, individuals often emphasize their distinctiveness,...
475
Social Identity
364
Social identity constitutes a significant aspect of an individual’s self-concept, shaped by membership in various social groups, including gender, nationality, ethnicity, sexual orientation, and political affiliation. Individuals associate specific traits with particular social groups, leading to internalization of these traits. For example, musicians are often perceived as creative, while women are frequently associated with nurturing tendencies. Once individuals identify with a...
364
Trigonometric Identities I
254
Trigonometric identities are equations that relate trigonometric functions and hold for all angles within their domains. A fundamental identity among these is the Pythagorean identity, which arises directly from the geometry of the unit circle. For any angle θ, a point on the unit circle has coordinates (cos θ, sin θ), and since the radius of the circle is one, the Pythagorean Theorem gives:This identity serves as the basis for deriving additional identities.
254
Marcia's Theory of Identity Status
1.7K
James Marcia's identity status model provides a framework for understanding how adolescents navigate identity formation through varying degrees of exploration and commitment. Marcia's model builds on Erik Erikson's theories of psychosocial development, focusing specifically on how adolescents reconcile individual aspirations with societal expectations. His model describes identity formation as a dynamic process where adolescents move between different states depending on their level...
1.7K
Role-Based Identity
224
Role-based identities are central to understanding how individuals navigate social environments by adopting distinct self-conceptions aligned with various societal roles. These identities are not fixed traits but are constructed through personal actions and the social feedback individuals receive in context-specific interactions. Each social role, such as student, teacher, or friend, carries a set of expectations and norms that influence how people think, feel, and behave within that...
224

