WS/T 381-2021 in English
VALIDDiagnosis standard of cysticercosis
- Issued on:2021-11-23
- Implemented on:2022-05-01
- File Format:PDF
- Delivery:Via email within 5 business days
$485.00
| Standard No: | WS/T 381-2021 |
| Document status: | VALID |
| Title in English: | Diagnosis standard of cysticercosis |
| Title in Chinese: | 囊尾蚴病诊断标准 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 5 business days |
| Issued on: | 2021-11-23 |
| Implemented on: | 2022-05-01 |
| Superseding: |
WS 381-2012 Diagnosis of cysticercosis
|
| Professional Classification: | WS-Hygiene |
| Related Keywords: | diagnosis standard
diagnosis stages characteristics diagnosis basic ct description added mri differential diagnosis standard revision dimensions |
| Related Topics: | semi-quantitative diagnosis
tail english Standardized flow diagnostics tail Diagnosis Auxiliary Diagnosis Tail + bag Capsule disease diagnosis Foreign Pathological Diagnosis Seven diagnostic criteria for dementia a tail Atypical chronic myeloid diagnostic standard diagnostic specimen Digital Diagnostic Standard Number Kikuchi disease diagnosis |
Introduction
Core changes in the standard revision
| Dimensions | 2012 version | 2021 version |
|---|---|---|
| Detection methods | Only etiology + immunology | Added Nucleic acid detection (Appendix D.3) |
| Imaging diagnosis | Basic CT description | Added MRI staging features + typical images (Appendix E) |
| Clinical classification | Type 3 cases | Five subcategories (subcutaneous/brain/eye/other/mixed) |
Key diagnostic techniques
1. Etiological testing
Surgical removal of nodules requires squeezing test (detection rate 82%) or cysticercosis hatching test (live identification), and pathological sections require observation of the scolex sucker structure (see Figure E.1 for details).
2. Immunological testing
ELISA method for detection of IgG/IgG4/IgM antibodies, with a critical value of S/N ≥ 2.1. IgG4 can be used for efficacy evaluation (negative conversion rate 75% 6 months after treatment).
3. Nucleic acid detection
PCR amplification was performed using ITS gene primers (BD1/BD2), and a 1000bp band was visible in positive samples (sensitivity increased by 30% compared with traditional methods).
Imaging diagnosis stages
Characteristics of the four stages of brain parenchymal type:
- Survival stage: CT shows 5-15mm low-density cysts with eccentric head ganglion (Figure E.1)
- Degeneration stage: MRI-T2WI shows thick-walled ring enhancement + surrounding edema (Figure E.7)
- Calcification stage: CT high-density nodules (2-8mm) without enhancement
Implementation recommendations
1. Screening in epidemic areas: Serum antibody testing is given priority for epilepsy patients (the positive rate can reach 68%)
2. Image selection: MRI+FLAIR sequence is recommended for brain type cases (the detection rate of head ganglion is increased by 40%)
3. Differential diagnosis: Subcutaneous nodules need to be distinguished from sparganosis (migratory) and lipoma (scolex)
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