Endometriosis and Chocolate Cyst Treatment in Istanbul

What is endometriosis?

Endometriosis is a chronic, oestrogen-sensitive disease in which tissue resembling the lining of the uterus (the endometrium) is found outside the uterus. This tissue can lie on or inside the ovaries, on the peritoneum, in the ligaments behind the uterus, between the vagina and the bowel, and in the bowel, bladder and ureters.

It is not cancer. However, it can cause pain, adhesions, ovarian cysts, bowel or urinary symptoms and difficulty conceiving, and it can affect quality of life for many years.

Types of endometriosis

Endometriosis does not have a single appearance, and several forms can exist in the same person. The treatment decision should be based not only on the “stage” number but on the location of the lesions, the complaints they cause, organ function and pregnancy plans.

• Superficial peritoneal endometriosis lies on the lining of the abdominal cavity. It can cause pain even though imaging looks normal.
• Endometrioma (chocolate cyst) is a cyst in the ovary filled with old, dark blood.
• Deep infiltrating endometriosis grows beneath the surface and can involve the uterosacral ligaments, the rectovaginal space, the bowel, bladder or ureter.

What are the symptoms of endometriosis?

Symptoms vary from person to person and can change over time. Some patients experience only severe period pain for years, while others are assessed because of bowel, urinary or pregnancy-related problems. Pain that gets worse with the menstrual cycle is an important clue, but in advanced disease it can become constant.

• Painful periods that do not respond to usual painkillers or that limit school, work or daily life
• Pelvic pain outside periods; pain during intercourse
• Painful bowel movements or bladder symptoms that peak around periods; blood in the stool or urine during periods
• Heavy bleeding, fatigue, bloating
• Difficulty becoming pregnant

Sudden and unbearable abdominal pain, fainting, high fever, persistent vomiting, heavy bleeding or being unable to pass gas or stool may need emergency assessment.

How is endometriosis diagnosed?

Diagnosis starts with a detailed history: the age at which the pain began, its relation to periods, intercourse, bowel and bladder symptoms, pregnancy wishes, earlier operations, medication and family history. Current practice does not require surgery in every patient before treatment can start.

• Examination can reveal tender nodules or fixed organs.
• Specialist transvaginal ultrasound shows endometriomas and many deep lesions. A normal ultrasound does not exclude superficial disease.
• MRI is used to map deep disease and its relation to the bowel, bladder and ureters before surgery.
• Laparoscopy can establish the diagnosis and treat at the same time when surgery is appropriate.

How is endometriosis treatment planned?

There is no single treatment that fits every patient. The aim is to manage pain, quality of life, organ function, sexual health and the pregnancy goal together, not just the lesions seen on imaging. The plan may change over time.

Chocolate cyst and endometriosis

A chocolate cyst is an endometrioma, the particular appearance endometriosis takes in the ovary. The name comes from the thick, dark old blood inside the cyst. Every endometrioma is related to endometriosis, but not every patient with endometriosis has an ovarian cyst.

Not every chocolate cyst needs an operation. The decision depends on symptoms, size, growth, appearance on imaging, ovarian reserve and pregnancy plans. Surgery on the ovary can reduce ovarian reserve, so in patients planning pregnancy the benefit and risk are weighed with particular care.

Deep endometriosis and bowel involvement

Deep endometriosis is a form in which lesions advance into the tissue below the surface and can cause fibrosis around them. The word “deep” does not mean cancer; it describes where the tissue lies. It can involve the ligaments behind the uterus, the rectovaginal space, the bowel, bladder, ureter or pelvic nerves.

Cyclical bowel symptoms (pain on defecation, constipation or diarrhoea, bloating around periods) and bladder symptoms can suggest involvement, but a normal colonoscopy does not exclude it because the disease often lies outside the bowel lining. Surgical planning relies on specialist ultrasound and MRI mapping. Not all bowel disease requires bowel resection: the options range from shaving the lesion to disc excision or segmental resection, chosen according to size, depth and symptoms. Where bowel, ureter or widespread involvement is possible, the aim is to involve the necessary specialties in planning before surgery.

Endometriosis and pregnancy

In some people endometriosis makes it harder to conceive by affecting the movement of the tubes, pelvic anatomy, ovarian reserve and the inflammatory environment. However, not everyone with endometriosis is infertile, and many conceive naturally. The stage of the disease alone does not predict fertility.

When surgery or fertility treatment is considered, age, ovarian reserve, tubal status, the partner’s factors and how long you have been trying are assessed together. Surgery before IVF is not always needed; the decision is individual.

When is endometriosis surgery considered?

Surgery can be considered when pain affecting quality of life persists despite medication, when there is a suspicious or growing ovarian mass, marked anatomical distortion, bowel or ureteric narrowing, risk to kidney function, or in appropriately selected infertility. The patient’s goals and priorities are part of the decision.

Recovery depends on the extent of the procedure: removing limited superficial lesions is not the same as ovarian, bowel or urinary tract surgery. In the first days tiredness, incision pain, shoulder pain from the laparoscopy, gas and temporary changes in bowel habit may occur. Endometriosis is a chronic disease and may return after surgery, so long-term follow-up and, where appropriate, hormonal suppression are planned individually.

Endometriosis from adolescence to menopause

In adolescents, period pain that prevents attending school, continues despite painkillers or causes vomiting or fainting from the first periods should be investigated; a normal ultrasound does not exclude superficial disease. Around menopause, symptoms usually ease, but masses that grow or look different after menopause need a separate assessment.

Common misconceptions about endometriosis

• “Severe period pain is normal.” Pain that stops daily life or keeps getting worse should not be accepted as normal and should be assessed.
• “If the ultrasound is clear, there is no endometriosis.” Superficial disease may not be seen on imaging; symptoms and examination remain important.
• “A hysterectomy ends endometriosis.” Removing the uterus does not remove lesions outside it, so it is not always a cure.

How to prepare for an endometriosis consultation

It is important to bring not only the written reports of previous tests but, if possible, digital copies of the images: details missing from the report can be seen when the images are re-examined. If you have had surgery, bring the operation note and pathology report so we know which lesions were treated. A pain diary (when the pain starts, its relation to the cycle, bowel and bladder, intercourse, medication and its effect, impact on work and sleep) makes the consultation much more useful.

Sources and medical review note

This guide is for general information and does not replace a personal examination or treatment advice. It draws on the following sources:

• World Health Organization – Endometriosis fact sheet
• NICE NG73 – Endometriosis: diagnosis and management
• ESHRE Guideline: Endometriosis
• ACOG Clinical Practice Guideline – Diagnosis of Endometriosis