This is the most common form of cancer in women, comprising about 19% of all malignant tumors. The likelihood of cancer increases with age is directly proportional to approximately 4% of patients were women younger than 30 years .. The highest death rates are usually between the ages of 40-50 years. In men, breast cancer occurs very rarely.
Risk factors: menopause at age 50, lack of birth or first birth at age 30 years (the incidence is 3 times more often) a family history indicative of breast cancer among mothers, sisters (2 times more likely) or both ( 6 times more often); fibrocystic breast disease (3-5 times faster).
In the development of breast cancer play an important role in pathological processes prior to its tissues, mainly re dishormonal hyperplasia with the formation of foci of fibrocystic mastopathy (fibroadenomatosis). The reasons for these changes in breast tissue are a number of endocrine disorders, often caused by underlying medical conditions ovaries, recurrent abortion, improper feeding a child, etc. The risk increases with the size of the prostate. Some significance in the development of breast cancer may have anatomical and embryological deviation – the presence of additional lobes of glandular tissue, and previous benign tumors – breast fibroadenomas. All of these entities, regardless of their propensity for malignant transformation, to be removed, because sometimes they are difficult to distinguish with some confidence from the beginning of cancer.
On histological structure of the breast cancers often referred to as adenocarcinoma or solid cancers with many transitional forms.Distinguish between ductal and lobular carcinomas presented infiltrative and neinfiltrativnymi forms.
It should be noted that in addition to cancers in the breast is extremely rare (only 1% of cases) may occur and non-epithelial malignant tumors – sarcoma, the diagnosis and treatment which is fundamentally no different from cancer.
Breast cancers are classified by the presence or absence of ERts (estrogen receptor status). The state may entirely change the ERts the disease. ERts-positive tumors more common in postmenopausal women (after menopause). About 60-70% of primary breast cancers characterized by the presence of ERts.ERts-negative tumors are more common in patients with pre-menopausal (before menopause). The state of estrogen receptors influences the choice of treatment.
Localization of tumors in the breast is the most different. Strikes both right-and left-iron around 2.5% watching bilateral breast cancers. Node in the second gland may appear as a metastasis, and the second independent tumor.
In most breast often (primerlo in half of patients) tumors arise in the upper-outer quadrant, sometimes at the edge of its border with the armpit.
Externally, the breast may appear small, very dense chondroid tumor without clear boundaries or as knot myagkovataya testovatoy consistency or round shape with fairly sharp edges, smooth or bumpy surface, sometimes reaching considerable size (5-10 cm), or Finally, in the form of uncertain compaction without clear boundaries.
Local spread of breast cancer on the skin depends on the closeness of its arrangement to cover and the nature of infiltrating growth. One of the typical symptoms of cancer – fixation, and wrinkled skin over the tumor indrawing with a transition in the later stages of a limited lymphostasis (a symptom of “orange peel”), and ulceration. Deep-seated tumors rapidly fuse with the underlying fascia and muscles.
The clinic.
The clinical picture of breast cancer characterized by the first appearance of the tumor site, or seal in the breast with indistinct borders. In this case, a change of cancer – she and her nipple swelling or tucked up and lowered down. Over the location of the tumors observed flattening or lunkoobraznos indrawing of the skin, sometimes a symptom of orange-peel, and subsequently appears ulcer.
Typical symptoms of breast cancer – a flattening of the nipple and indrawing, and bleeding from it. Pain is not a diagnostic feature: they can not have cancer and at the same time greatly disturbed in patients with mastopathy.
In addition to the usual clinical presentation of breast cancer secrete particular its forms: mastitopodobnaya form rozhistopodobnaya form, tubular carcinoma and Paget’s carcinoma.
Mastitopodobny cancer differs from the rapid passage of a sharp increase in breast cancer, its swelling and soreness. The skin is tense, hot to the touch, reddish. Symptoms of this cancer are similar to acute mastitis that young women, especially against the background of the migrated families, often entails severe diagnostic errors.
Rozhistopodobnaya form of cancer differs sharply appearance of redness on the skin glands, sometimes spreading beyond its borders, with jagged serrated edges, sometimes with a high rise in temperature. This form can be mistaken for ordinary erysipelas with the appropriate assignment of various physical therapy and medication, which leads to delays in proper treatment.
The third form – testaceous cancer is caused by cancerous infiltration of the lymph vessels and cracks of the skin, which leads to a thickening of the knobby skin. Formed as a thick shell, covering the half, and sometimes the whole chest. During this highly malignant form.
A special form of the planar damage the nipple and areola is Paget’s carcinoma. In the initial stages there peeling and Moisture nipple, which is often mistaken for eczema. Later the cancer spreads deeper into the ducts glands, forming in the tissue of a typical node cancer with metastatic lymph nodes.Paget’s carcinoma occurs relatively slowly, sometimes for several years, limited only by the defeat of the nipple.
In general, for breast cancer depends on many factors and primarily on the hormonal status and age of the woman. The young, especially against the background of pregnancy and lactation, it is very fast, giving early distant metastases. At the same time in older women with breast cancer may exist for 8-10 years without a propensity to metastasize.
Diagnostics.
For recognition of breast cancer conducted a thorough examination and oschupgvanie patient. At first, it examined while standing with lowered and then raised his hands, and then repeat the inspection and palpation of the patient in a horizontal position on the couch. At the same time seek to identify all the typical symptoms of cancer: a tumor, its density, blurred boundaries, spayanie with skin, breast asymmetry, nipple indrawing, etc. Be sure to explore the second breast to detect tumors in her self, or metastasis, as well as carry out palpation both axillary and supraclavicular regions. Due to the frequency of metastases in the liver area it should also be felt the. A compulsory component of the survey is radiography of the lungs. When the central or medial tumor location sometimes spend chrezgrudinnuyu phlebography for detection of metastases in parasternal lymph node chain.
In cases where the symptoms of breast cancer clearly marked, the diagnosis presents no difficulty. However, in the early stages, with small size, deep location of the tumor and the absence of defined metastatic malignant tumor recognition requires further investigation. For this purpose, using X-ray of the breast (beskontrastnaya mammagrafiya), and puncture of the tumor with the cytological examination. Aspiration biopsy followed by cytology aspirate confirmed the diagnosis. In the biopsy as determined estrogen and progesterone receptors.Retseptorpozitivnye tumors more amenable to hormone therapy and have a better prognosis.
In other cases, resorting to biopsy the tumor excised together with surrounding tissue disease (so-called sectoral resection of the breast) with an urgent histological examination. Upon confirmation of cancer surgery immediately extend to the radical.If the first stage of treatment planning radiation therapy regardless of the degree of confidence, the clinical diagnosis must be confirmed by cytological conclusion. Ultrasound is performed to determine solid or cystic nature of the entity (or palpable nonpalpable).
To clarify the extent of disease at the time of diagnosis and further monitoring is used scintigraphy of the skeleton (if necessary x-rays of the bones), liver ultrasound, X-rays of light, etc.
Treatment.
When breast cancer in early stages when the tumor is small in size and metastases in regional lymph nodes are not available, use a purely surgical treatment in a typical radical mastzktomii.
With tumors greater than 5 cm in diameter, with prominent skin symptoms and infiltration of the surrounding breast tissue and in the presence of palpable metastases in the axillary lymph nodes hold the combined treatment. In the first stage – remote gamma-therapy to the breast area and all areas of regional metastasis (axillary, sub-and supraclavicular and parasternal region), the second – a surgical intervention. No special preoperative or postoperative management of these interventions do not require.It is only necessary to control the active aspiration of the wound being carried out within 3-4 days, and follow up patients they recommended therapeutic exercises to develop hand movements on the side of the operation.
In the common cancers of the breast, both on local manifestations, and the degree of lymph system, especially in young menstruating women, used a complex method of treatment by combining radiation therapy and surgery with hormone treatment, and in some cases with hormone-chemotherapy.
Hormone therapy for breast cancer include bilateral oophorectomy (or ovarian radiation off), and androgen therapy kortikoidnuyu therapy for adrenal suppression. Started hormone therapy can not be cut short; course it should last for many months and even years. Only in cases of very long-term use of hormonal, drugs, or develop symptoms of side effects can be reduced by increased dosage and intervals between doses of drugs, but in no case is still pending treatment.
To chemotherapy and hormonal therapy is widely sought in the occurrence of distant metastases in patients previously had undergone surgical or combined treatment. In addition, the localization of metastases in the bones of the total complement local irradiation treatment of metastasis, which allows a significant percentage of cases granted temporary improvement (remission) and extend the life of the patient. It should also be made to palliative surgery for breast cancer – its simple amputations performed in patients with multiple metastases in the presence of decay and ulceration of the tumor. This operation is not designed to save lives, but saves the patient from painful subjective experiences associated with purely domestic, and social aspects.
In the common cancers of the breast or the presence of distant metastases in older women with menopause duration over b years, in addition to chemotherapy treatment used female sex hormones – estrogen.
Recurrences of breast cancer occur in the area of the scar on the chest wall and rarely require treatment as a local ray techniques (external beam or interstitial administration of radioactive colloidal gold) and total hormone-chemotherapy.
For early detection of recurrence should be dynamic observation of patients after radical treatment. To do this, conducted medical examinations every 3-4 months, annual mammography, bone scan, chest radiography, and examination of the liver. By the patient should be conducted monthly self-examination.
Metastasis.
Shock lymph, which is very developed in the breast tissue, tumor cells are carried to the lymph nodes and provide initial mstastazy.The first affects the axillary, subclavian and subscapular group of nodes, and at the location of the tumor in the medial quadrants of the prostate – parasternal lymph node chain. The next stage is metastasis to supraclavicular, cervical and mediastinal lymph nodes, as well as a cross into the opposite armpit. There is a cross-metastasis in the second breast. In some cases metastases in the axillary lymph nodes appear before discovering a tumor in the breast, and then in the first place it is necessary to exclude cancerous lesion.
Hematogenous metastases occur through the lungs, pleura, liver, bones and brain. For bone metastases is characterized rachiopathy, flat bones of the pelvis, ribs, skull and femur and humerus, which manifests itself initially as non-permanent aching in the bones, subsequently receiving persistent painful character.
Forecast.
In breast cancer prediction depends on the stage of the process, the rapidity of its course, and patient age. In advanced stages of the life expectancy of 2-3 years. Early diagnosis of breast cancer provides a successful treatment for most patients. Five-year survival in the treatment of localized forms of stage I-II is 90%, with mestnorasprostranannom cancer – 60%. The results of treatment are much worse in the presence of distant metastaeov.
Prophylaxis.
Prevention of breast cancer is primarily in the timely disposal of patients from pre-cancerous masses in the mammary glands, as well as in the observance of the normal physiological rhythm of a woman’s life (pregnancy, breast) with a reduction to the minimum number of abortions. In the diagnosis of breast cancer are important systematic self-examination (see Stanichka “Samoobsdelovanie breast”), and annual preventive medical examinations of women aged 40 years. Mammography is recommended every 1 to 2 years after age 40, a once a year – after 50 years. Women belonging to risk groups recommended for annual mammograms starting with perhaps an early age.