Dr Erick Fuentes - Breast and General Surgeon

Email Dr Erick Fuentes  info@drerickfuentes.com.au
Phone Dr. Erick Fuentes  +61 2 8203 1359
Fax Dr Erick Fuentes +61 2 9475 5442

Breast Surgery



Gynecomastia is the name given to enlargement of the breast tissue in males. It is caused by a relative imbalance between androgens (“male” hormones) and oestrogens (“female” hormones).

Gynecomastia can affect one or both breasts. This condition may be seen in newborns, adolescents and elderly individuals, as a part of physiological changes.  It is sometimes, but not always, painful with an associated lump behind the nipple and areola. In rare instances there may be secretion of milk from both nipples.

Generally, gynecomastia does not produce any harmful effects but it may cause undue stress and embarrassment that can impact the active sex life of the affected individual. Gynecomastia can also cause psychological damage or loss of self-esteem.

Causes of Gynecomastia



  • Newborn: Due to the presence of maternal hormones (oestrogen and progesterone) circulating in blood
  • Adolescence: Due to hormonal changes during puberty that are temporary. Gynecomastia in adolescents usually disappears at the end of puberty.
  • Increased age and weight: Production of testosterone declines with age while fat cells stimulate the secretion of female hormone oestrogen.


There are various pathological causes of gynecomastia and although they may not always be the cause, they must always be excluded before any treatment. Some of the more common conditions that cause gynaecomastia are listed below.

  • Increased levels of oestrogen due to various conditions such as obesity, hyperthyroidism, malnourishment, adrenal tumours and testicular tumours
  • Decreased or lack of testosterone production due to conditions such as Klinefelter’s syndrome, viral orchitis and renal failure
  • Chronic illness including, chronic liver disease, chronic renal failure, hypothyroidism, diabetes, malnutrition, HIV, obesity
  • Endocrine disorders: hypogonadism
  • Tumours of the pituitary or adrenal glands, testicle, liver, or secondary tumours.

Medications and other drugs

Certain medications and commonly used drugs cause gynaecomastia as a side effect. Some common medications that have been linked to gynaecomastia include:

  • Diuretics (thiazide and spironolactone)
  • Antipsychotics and antidepressants (e.g., diazepam, haloperidol, risperidone and tricyclic antidepressants)
  • Heart and blood pressure meds (e.g., digoxin, verapamil, nifedipine)
  • Gastric acid suppressant (e.g., omeprazole, cimetidine)
  • Alcohol
  • Opioids
  • Cannabis
  • Amphetamines
  • Performance enhancing drugs: Anabolic steroids hGH, estrogens, hCG, GnRH analogs and 5-α reductase inhibitors, testosterone
  • Chemotherapy agents
  • Anti-androgens used in the treatment of prostate cancer

Diagnosis – Gynecomastia

The diagnosis of gynecomastia includes a physical examination of the patient, by the physician. Typically, the breasts, abdomen and testicles are examined.

Occasionally a mammogram, ultrasound and a biopsy of the breast may be needed to confirm the diagnosis. Certain blood tests may also be conducted to evaluate the underlying cause of gynecomastia.

Before Gynecomastia Surgery

After Gynecomastia Surgery

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Level 1
11 Khartoum Road
Macquarie Park

Strathfield Private Hospital

3 Everton Rd,
Strathfield NSW 2135
Hours: 9am - 5pm