Evaluating symptom assessment methods for non-lactational mastitis

Validity and Reliability of the Mastitis Symptom Severity Assessment Methods (M-Score and BISSI) in Non-Lactational Mastitis

Observational Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University · NCT06667609

This study is testing two ways to measure how bad symptoms are for people with non-lactational mastitis to find a reliable method that helps track their condition and treatment.

Quick facts

Study typeObservational
Enrollment300 (estimated)
Ages18 Years to 65 Years
SexFemale
SponsorSun Yat-Sen Memorial Hospital of Sun Yat-Sen University Academic / other
Locations3 sites (Chaozhou, Guangdong and 2 other locations)
Trial IDNCT06667609 on ClinicalTrials.gov

What this trial studies

This study aims to assess the validity and reliability of two symptom severity assessment tools, the Mastitis-score (M-score) and the Breast Inflammatory Symptom Severity Index (BISSI), specifically for non-lactational granulomatous lobular/periductal mastitis (NL-GLM/PDM). It will involve a multicenter, prospective cohort design where both physician-directed and patient-reported measures will be evaluated. The goal is to establish a reliable method for measuring symptom severity and treatment efficacy in patients suffering from this condition, which currently lacks standardized assessment tools.

Who should consider this trial

Good fit: Ideal candidates are females aged 18 to 65 who have clinically and pathologically confirmed non-lactational granulomatous lobular/periductal mastitis.

Not a fit: Patients with confirmed or suspected malignant breast tumors or those who are pregnant will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide a validated tool for better assessing and managing symptoms in patients with non-lactational mastitis.

How similar studies have performed: While the M-score has been previously used, the BISSI's clinical validity for NL-GLM/PDM is still unclear, making this approach somewhat novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Female, age between 18 and 65 years;
2. Clinically considered as Non-Lactational mastitis;
3. Clinically and Pathologically confirmed NL-GLM/PDM;
4. Patients planning to receive treatment or observation alone;
5. Signed the informed consent form

Exclusion Criteria:

1. Patients with confirmed or suspected malignant breast tumors
2. Patients with bilateral mastitis (including those with bilateral Non-Lactational Mastitis occurring simultaneously or successively)
3. Pregnant.

Where this trial is running

Chaozhou, Guangdong and 2 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Granulomatous MastitisMastitis ChronicM-scorevalidityreliability
Last reviewed 2026-06-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.