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This rat study suggests that 5α-dihydrotestosterone plays a critical role in inhibiting nipple development in male fetuses by causing the regression of the nipple anlage in utero.

This study found that specialized nipple epidermis in mice is maintained by the repression of TGFβ signaling through estrogen, which highlights the role of hormonal regulation in epidermal maintenance.

This case report documents the first known instance of nevoid hyperkeratosis of the nipple and areola with unilateral presentation in a Saudi female, diagnosed through clinical evaluation and biopsy.

Finasteride and DEHP exposure during development can change reproductive markers in rats.

This study used a mouse model to reveal that S100A4-positive cells, specifically fibroblasts and immune cells, play a crucial role in nipple development, essential for successful lactation, despite no issues with mammary morphology or milk production.

This study found that reducing BMP signaling in mouse nipple epithelia, achieved through Noggin overexpression, can convert them into hairy skin with pilosebaceous units.

This abstract describes the Dermatologic Surgery journal, which publishes comprehensive and up-to-date information on various dermatologic surgery techniques such as cosmetic and reconstructive procedures, skin cancer surgeries, and more, making it a valuable resource for professionals in the field.

In this case report, a 20-year-old man with a birthmark was identified as having a supernumerary nipple, a developmental anomaly, using dermoscopy to distinguish it from other pigmented skin lesions such as melanocytic nevus or basal cell carcinoma.

This study found that prenatal exposure to finasteride in rats led to permanent changes in developmental endpoints like anogenital distance and nipple retention, which were predictive of further reproductive tract malformations.

This article reviews the use of medical tattooing for cosmetic and therapeutic purposes across various fields, but reports no new clinical results.

This study found that the absence of Sostdc1 in mice alters mammary gland and hair follicle development, particularly by increasing vibrissae numbers and causing unusual nipple-like structures.

This review describes the expanding medical uses of micropigmentation, including for vitiligo, burn scars, and nipple-areola reconstruction, and highlights safety concerns related to sterilization practices.

This review discusses the widespread acceptance of micropigmentation for cosmetic purposes and its various medical applications, but reports no new clinical findings.

This study highlights the potential benefits and current limitations of robotic systems in nipple-sparing mastectomies, noting their promise in reducing surgeon fatigue but pointing out challenges such as longer operating times, high costs, and limited haptic feedback.

This article reviews the indications for micropigmentation in dermatological conditions like stable vitiligo and alopecia, but presents no new clinical results.

This study found that skin changes such as pigmentary alterations, vascular and connective tissue changes are common during pregnancy, with areola/nipple darkening and striae gravidarum frequently observed.

This study found that areola formation in mice requires a combination of pregnancy hormones and mechanical strain, with individual stimuli causing only modest changes in epidermal proliferation and connective tissue remodeling.

This study found that prenatal exposure to finasteride in rats disrupted male reproductive development, causing physical alterations such as delayed preputial separation and increased nipple retention.

This article reviews the causes and management strategies for amenorrhea and reports no new clinical results, with treatment typically based on the underlying cause, including hormonal therapy and lifestyle changes.

This review examines different types of skin injury in athletes, including mechanical and environmental causes, and the impact of performance-enhancing drugs, but reports no new clinical findings.

In this study, D-004 did not affect androgen-dependent development in rats exposed in utero, while finasteride caused significant changes in male offspring's androgen-dependent tissues.

This study observed that developing mammary organs in Monodelphis domestica show mammary hairs in 12-week-old females, which disappear by 18 weeks, with findings suggesting shared characteristics between their nipples and eutherian nipples, supporting the evolutionary link between mammary glands and hair organs.

Testosterone in older women can increase bone density, muscle mass, fat mass, improve memory, and boost libido, but may cause nipple color changes.

The document concludes that rib-sparing techniques in breast reconstruction have limited benefits, sentinel lymph node biopsy is needed for desmoplastic melanoma, certain hair preservation methods improve graft survival, partial turbinectomy effectively reduces nasal obstruction, nipple shields with irrigation may reduce capsular contracture, and thicker malignant melanomas have a higher risk of non-skin cancers.

The document concludes that rib-sparing techniques in breast reconstruction have limited benefits, sentinel lymph node biopsy is needed for desmoplastic melanoma, certain hair preservation methods improve graft survival, partial turbinectomy effectively reduces nasal obstruction, nipple shields with irrigation may reduce capsular contracture, and thicker malignant melanomas have a higher risk of non-skin cancers.

The document describes various skin conditions, their features, and treatments but lacks detailed study size information.

This study observed that areola formation in mice requires exposure to pregnancy hormones and mechanical strain, beyond individual stimuli like hormonal milieu or strain alone.

This case report documents a 3-year-old guinea pig with hormonally active ovarian cysts, cystic endometrial hyperplasia, and bacterial endometritis associated with a uterine foreign body.

This case report details a diagnosis of adult-onset isolated hypogonadotropic hypogonadism in a 23-year-old African American female, highlighting its genetic basis and treatment approach.

Ectodysplasin-A1 is crucial for developing hair, teeth, and glands.