ICD-10: N61.2

Granulomatous mastitis

Additional Information

Clinical Information

Granulomatous mastitis, classified under ICD-10 code N61.2, is a rare inflammatory breast condition characterized by the formation of granulomas in breast tissue. Understanding its clinical presentation, signs, symptoms, and patient characteristics is crucial for accurate diagnosis and management.

Clinical Presentation

Granulomatous mastitis typically presents with a range of symptoms that can mimic other breast conditions, making diagnosis challenging. The condition is often seen in women of childbearing age, particularly those who are pregnant or breastfeeding, although it can occur in other demographics as well.

Signs and Symptoms

  1. Breast Mass: Patients often present with a palpable mass in the breast, which may be firm or hard to the touch. The mass can vary in size and may be solitary or multiple[1][2].

  2. Pain and Tenderness: The affected area is frequently painful, and tenderness may be noted upon examination. This pain can be localized to the mass or more diffuse throughout the breast[2][3].

  3. Skin Changes: There may be associated skin changes over the affected area, including:
    - Erythema (redness)
    - Edema (swelling)
    - Induration (hardening of the skin)
    - In some cases, ulceration may occur, leading to discharge[3][4].

  4. Nipple Discharge: Some patients may experience discharge from the nipple, which can be serous or purulent in nature. This discharge may be spontaneous or elicited during examination[4][5].

  5. Systemic Symptoms: While granulomatous mastitis is primarily a localized condition, some patients may report systemic symptoms such as fever or malaise, although these are less common[2][3].

Patient Characteristics

Granulomatous mastitis predominantly affects women, particularly those in their reproductive years. Key characteristics include:

  • Age: Most commonly diagnosed in women aged 20 to 40 years[1][2].
  • Pregnancy and Lactation: A significant number of cases occur during or after pregnancy, suggesting a potential hormonal influence on the condition[3][4].
  • Ethnicity: Some studies indicate a higher prevalence in certain ethnic groups, although this can vary by region and population[5][6].
  • History of Breastfeeding: Many patients have a history of breastfeeding, which may be a contributing factor to the development of the condition[2][3].

Conclusion

Granulomatous mastitis (ICD-10 code N61.2) is characterized by a range of clinical presentations, primarily involving painful breast masses, skin changes, and potential nipple discharge. It predominantly affects women of childbearing age, particularly those who are pregnant or breastfeeding. Due to its overlapping symptoms with other breast conditions, a thorough clinical evaluation, including imaging and possibly biopsy, is essential for accurate diagnosis and management. Understanding these characteristics can aid healthcare providers in recognizing and treating this complex condition effectively.

Approximate Synonyms

Granulomatous mastitis, classified under the ICD-10 code N61.2, is a specific type of inflammatory breast disorder. Understanding its alternative names and related terms can enhance clarity in medical documentation and communication. Below is a detailed overview of the alternative names and related terms associated with this condition.

Alternative Names for Granulomatous Mastitis

  1. Granulomatous Lobular Mastitis: This term emphasizes the lobular aspect of the breast tissue affected by the granulomatous inflammation.

  2. Idiopathic Granulomatous Mastitis: This name is often used when the cause of the condition is unknown, highlighting the idiopathic nature of the inflammation.

  3. Lobular Granulomatous Mastitis: Similar to the first alternative, this term focuses on the lobular structure of the breast tissue involved.

  4. Chronic Granulomatous Mastitis: This term may be used to describe the chronic nature of the inflammation, distinguishing it from acute forms of mastitis.

  5. Non-specific Granulomatous Mastitis: This name can be used when the granulomatous inflammation does not fit into other specific categories of mastitis.

  1. Mastitis: A general term for inflammation of breast tissue, which can be caused by infection or other factors. Granulomatous mastitis is a specific subtype of mastitis.

  2. Inflammatory Breast Disease: This broader category includes various inflammatory conditions of the breast, including granulomatous mastitis.

  3. N61 - Inflammatory Disorders of Breast: This is the broader ICD-10 category under which granulomatous mastitis falls, encompassing various inflammatory conditions affecting the breast.

  4. N61.22 - Granulomatous Mastitis, Left Breast: A more specific code that indicates the location of the condition, which can be relevant for treatment and documentation.

  5. N61.21 - Granulomatous Mastitis, Right Breast: Similar to N61.22, this code specifies the condition's occurrence in the right breast.

Conclusion

Granulomatous mastitis (ICD-10 code N61.2) is recognized by various alternative names and related terms that reflect its characteristics and classification within the broader context of breast inflammatory disorders. Understanding these terms is crucial for accurate diagnosis, treatment, and documentation in medical practice. If you need further information or specific details about treatment options or clinical guidelines related to granulomatous mastitis, feel free to ask!

Diagnostic Criteria

Granulomatous mastitis, classified under ICD-10 code N61.2, is a rare inflammatory breast condition characterized by the presence of granulomas in breast tissue. The diagnosis of granulomatous mastitis involves a combination of clinical evaluation, imaging studies, and histopathological examination. Below are the key criteria and steps typically used in the diagnosis of this condition.

Clinical Evaluation

  1. Patient History:
    - A thorough medical history is essential, including any previous breast conditions, surgeries, or infections.
    - The clinician should inquire about symptoms such as breast pain, swelling, and any discharge from the nipple.

  2. Physical Examination:
    - A detailed breast examination is performed to assess for palpable masses, tenderness, or skin changes (e.g., erythema or ulceration).
    - The presence of a firm, irregular mass is often noted, which may mimic breast cancer.

Imaging Studies

  1. Mammography:
    - Mammograms may show nonspecific findings such as masses or areas of increased density.
    - In some cases, they may reveal microcalcifications or other changes that warrant further investigation.

  2. Ultrasound:
    - Breast ultrasound is often used to evaluate the characteristics of the mass.
    - It can help differentiate between solid and cystic lesions and assess for associated lymphadenopathy.

  3. MRI:
    - Magnetic Resonance Imaging (MRI) may be utilized in complex cases to provide a more detailed view of the breast tissue and to evaluate the extent of the disease.

Histopathological Examination

  1. Biopsy:
    - A definitive diagnosis of granulomatous mastitis typically requires a biopsy, which can be performed via fine-needle aspiration (FNA) or excisional biopsy.
    - Histological examination of the biopsy specimen is crucial for identifying granulomas, which are clusters of macrophages that have transformed into epithelioid cells.

  2. Exclusion of Other Conditions:
    - The histopathological analysis must rule out other causes of granulomatous inflammation, such as infections (e.g., tuberculosis, fungal infections) or malignancies.
    - Special stains and cultures may be performed to identify infectious agents.

Laboratory Tests

  1. Blood Tests:
    - While not specific for granulomatous mastitis, blood tests may be conducted to assess for underlying systemic conditions or infections.
    - Inflammatory markers such as C-reactive protein (CRP) may be elevated.

Conclusion

The diagnosis of granulomatous mastitis (ICD-10 code N61.2) is a multifaceted process that requires careful clinical assessment, imaging studies, and histopathological confirmation. Given its rarity and the potential for misdiagnosis, it is essential for healthcare providers to consider this condition in patients presenting with breast masses and to conduct thorough investigations to ensure accurate diagnosis and appropriate management.

Treatment Guidelines

Granulomatous mastitis, classified under ICD-10 code N61.2, is a rare inflammatory condition of the breast characterized by the formation of granulomas. This condition can be challenging to diagnose and manage due to its similarity to other breast disorders, including infections and malignancies. Here, we will explore the standard treatment approaches for granulomatous mastitis, including diagnostic considerations, medical management, and surgical options.

Diagnostic Considerations

Before initiating treatment, a thorough diagnostic process is essential. This typically includes:

  • Clinical Examination: A detailed history and physical examination to assess symptoms such as breast pain, swelling, and any discharge.
  • Imaging Studies: Mammography and ultrasound can help identify the presence of masses or abnormalities in breast tissue.
  • Biopsy: A core needle biopsy or excisional biopsy is often necessary to confirm the diagnosis by identifying granulomatous inflammation and ruling out malignancy[1].

Medical Management

The treatment of granulomatous mastitis often begins with medical management, which may include:

1. Corticosteroids

Corticosteroids are the first-line treatment for granulomatous mastitis. They help reduce inflammation and can lead to significant improvement in symptoms. The typical regimen may involve:

  • Oral Corticosteroids: Prednisone is commonly prescribed, starting at a high dose and then tapering down based on the patient's response. The duration of treatment can vary, often lasting several weeks to months[2].

2. Antibiotics

While granulomatous mastitis is not primarily an infectious process, antibiotics may be used if there is a suspicion of secondary infection or to address any coexisting bacterial infections. Common choices include:

  • Broad-Spectrum Antibiotics: Such as amoxicillin-clavulanate or clindamycin, particularly if there are signs of infection[3].

3. Immunosuppressive Agents

In cases where corticosteroids are ineffective or if the patient experiences significant side effects, other immunosuppressive agents may be considered. These can include:

  • Methotrexate: This drug has been used with some success in managing granulomatous mastitis, particularly in patients who do not respond to corticosteroids[4].
  • Azathioprine: Another option for patients requiring long-term immunosuppression[5].

Surgical Management

In certain cases, surgical intervention may be necessary, especially if there is a lack of response to medical therapy or if there are significant complications. Surgical options include:

1. Excisional Surgery

  • Granuloma Excision: Surgical removal of the granulomatous tissue can be performed, particularly if the lesions are localized and accessible. This approach can provide symptomatic relief and confirm the diagnosis histologically[6].

2. Drainage Procedures

  • Abscess Drainage: If there is a significant abscess formation, drainage may be required. This can be done percutaneously or through surgical incision, depending on the size and location of the abscess[7].

Follow-Up and Monitoring

Regular follow-up is crucial to monitor the response to treatment and to manage any potential recurrence of granulomatous mastitis. Patients should be educated about the signs of recurrence and the importance of adhering to follow-up appointments.

Conclusion

Granulomatous mastitis, while rare, requires a comprehensive approach to diagnosis and management. The standard treatment typically involves corticosteroids as the first-line therapy, with antibiotics and immunosuppressive agents as adjuncts when necessary. Surgical options may be considered for persistent or complicated cases. Ongoing research and clinical experience continue to refine the management strategies for this challenging condition, emphasizing the need for individualized treatment plans based on patient response and preferences.

For further information or specific case management, consulting with a specialist in breast diseases or a multidisciplinary team may be beneficial.

Description

Granulomatous mastitis, classified under ICD-10 code N61.2, is a rare inflammatory condition affecting the breast tissue. This condition is characterized by the formation of granulomas, which are small areas of inflammation that can lead to breast pain, swelling, and sometimes the formation of lumps. Below is a detailed overview of granulomatous mastitis, including its clinical description, symptoms, diagnosis, and treatment options.

Clinical Description

Granulomatous mastitis is primarily an inflammatory disorder of the breast, often idiopathic in nature, meaning that the exact cause is not well understood. It is thought to be related to autoimmune processes or infections, but definitive etiological factors remain elusive. The condition can occur in women of reproductive age, particularly those who are breastfeeding or have recently given birth, although it can also affect women outside these demographics.

Symptoms

Patients with granulomatous mastitis may present with a variety of symptoms, including:

  • Breast Pain: Often localized to the affected area.
  • Swelling: The breast may appear swollen or enlarged.
  • Lumps: Palpable masses may be felt within the breast tissue.
  • Nipple Discharge: Some patients may experience discharge from the nipple, which can be bloody or purulent.
  • Skin Changes: In some cases, the skin overlying the affected area may become red, warm, or show signs of ulceration.

Diagnosis

Diagnosing granulomatous mastitis typically involves a combination of clinical evaluation and imaging studies. Key steps in the diagnostic process include:

  1. Clinical Examination: A thorough physical examination of the breast to assess for lumps, tenderness, and other signs of inflammation.
  2. Imaging Studies: Mammography or ultrasound may be used to evaluate the breast tissue and rule out other conditions, such as breast cancer.
  3. Biopsy: A definitive diagnosis often requires a biopsy of the affected tissue to identify the presence of granulomas and exclude malignancy. Histological examination will typically reveal non-caseating granulomas.

Differential Diagnosis

It is crucial to differentiate granulomatous mastitis from other breast conditions, including:

  • Infectious Mastitis: Often caused by bacteria, leading to abscess formation.
  • Breast Cancer: Malignancies can present similarly, necessitating careful evaluation.
  • Other Inflammatory Conditions: Such as fat necrosis or autoimmune diseases.

Treatment Options

The management of granulomatous mastitis can vary based on the severity of the condition and the symptoms presented. Treatment strategies may include:

  • Observation: In mild cases, a watchful waiting approach may be adopted, as some cases resolve spontaneously.
  • Medications: Corticosteroids are commonly used to reduce inflammation and manage symptoms. Antibiotics may be prescribed if an infectious component is suspected.
  • Surgery: In cases where there are significant masses or abscesses, surgical intervention may be necessary to excise the affected tissue.

Conclusion

Granulomatous mastitis (ICD-10 code N61.2) is a complex condition that requires careful diagnosis and management. While it can be challenging to treat due to its idiopathic nature, understanding its clinical presentation and treatment options is essential for effective patient care. Ongoing research into the underlying causes and optimal treatment strategies continues to be important in improving outcomes for affected individuals.

Related Information

Clinical Information

  • Rare inflammatory breast condition
  • Granulomas form in breast tissue
  • Typically affects women of childbearing age
  • Pregnancy or breastfeeding may trigger
  • Breast mass is common presenting symptom
  • Pain and tenderness are often reported
  • Skin changes include erythema, edema, and induration
  • Nipple discharge can be serous or purulent
  • Systemic symptoms like fever are rare
  • Mostly affects women aged 20-40 years

Approximate Synonyms

  • Granulomatous Lobular Mastitis
  • Idiopathic Granulomatous Mastitis
  • Lobular Granulomatous Mastitis
  • Chronic Granulomatous Mastitis
  • Non-specific Granulomatous Mastitis

Diagnostic Criteria

  • Patient history includes previous breast conditions
  • Detailed breast examination assesses palpable masses and tenderness
  • Mammography shows nonspecific findings such as masses or increased density
  • Breast ultrasound evaluates characteristics of the mass and lymphadenopathy
  • MRI used in complex cases to evaluate extent of disease
  • Biopsy is required for definitive diagnosis of granulomatous mastitis
  • Histological examination identifies granulomas in breast tissue
  • Exclusion of other conditions such as infections or malignancies

Treatment Guidelines

Description

Related Diseases

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