Non-Cochrane · DTA · PM42563504

Cell Blocks and the Milan System for Reporting Salivary Gland Cytopathology: A Meta-Analysis.

Närhi Aada, Kalfert David, Lagerstam Henri, et al. · Diagnostic cytopathology · 2026 · PubMed · doi:10.1002/dc.70193

Findings

14 findings

Population
Salivary gland fine-needle aspiration samples processed to cell blocksFine-needle aspiration with cell block preparation, classified by the Milan System (MSRSGC)No comparator (single-arm proportion)Proportion of samples in MSRSGC category SUMP (Salivary gland neoplasm of uncertain malignant potential)Pooled proportion (%) 8.0 [3.5, 12.6]
GRADE not reported
5 studies · 1132 participants
Salivary gland fine-needle aspiration samples processed to cell blocksFine-needle aspiration with cell block preparation, classified by the Milan System (MSRSGC)No comparator (single-arm proportion)Proportion of samples in MSRSGC category ND (Non-diagnostic)Pooled proportion (%) 21.9 [6.0, 37.9]
GRADE not reported
5 studies · 1132 participants
Salivary gland fine-needle aspiration samples processed to cell blocksFine-needle aspiration with cell block preparation, classified by the Milan System (MSRSGC)No comparator (single-arm proportion)Proportion of samples in MSRSGC category BN (Benign neoplasm)Pooled proportion (%) 30.0 [15.5, 44.5]
GRADE not reported
5 studies · 1132 participants
Salivary gland fine-needle aspiration samples processed to cell blocksFine-needle aspiration with cell block preparation, classified by the Milan System (MSRSGC)No comparator (single-arm proportion)Proportion of samples in MSRSGC category SM (Suspicious for malignancy)Pooled proportion (%) 1.9 [1.1, 2.7]
GRADE not reported
5 studies · 1132 participants
Salivary gland fine-needle aspiration samples processed to cell blocksFine-needle aspiration with cell block preparation, classified by the Milan System (MSRSGC)No comparator (single-arm proportion)Proportion of samples in MSRSGC category AUS (Atypia of undetermined significance)Pooled proportion (%) 8.2 [3.3, 13.1]
GRADE not reported
5 studies · 1132 participants
Salivary gland fine-needle aspiration samples processed to cell blocksFine-needle aspiration with cell block preparation, classified by the Milan System (MSRSGC)No comparator (single-arm proportion)Proportion of samples in MSRSGC category NN (Non-neoplastic)Pooled proportion (%) 6.4 [3.7, 9.1]
GRADE not reported
5 studies · 1132 participants
Salivary gland fine-needle aspiration samples processed to cell blocksFine-needle aspiration with cell block preparation, classified by the Milan System (MSRSGC)No comparator (single-arm proportion)Proportion of samples in MSRSGC category MN (Malignant)Pooled proportion (%) 19.4 [9.8, 29.1]
GRADE not reported
5 studies · 1132 participants
Salivary gland cell block FNA samples in each MSRSGC category with known outcome (four studies; Kumar 2023 reported no ROM)Fine-needle aspiration with cell block preparation, classified by the Milan System (MSRSGC)No comparator (single-arm proportion)Risk of malignancy (ROM) in MSRSGC category ND (Non-diagnostic)Pooled proportion (%) 25.3 [10.2, 40.5]
GRADE not reported
4 studies · 133 participants
Salivary gland cell block FNA samples in each MSRSGC category with known outcome (four studies; Kumar 2023 reported no ROM)Fine-needle aspiration with cell block preparation, classified by the Milan System (MSRSGC)No comparator (single-arm proportion)Risk of malignancy (ROM) in MSRSGC category AUS (Atypia of undetermined significance)Pooled proportion (%) 26.3 [2.0, 50.5]
GRADE not reported
4 studies · 60 participants
Salivary gland cell block FNA samples in each MSRSGC category with known outcome (four studies; Kumar 2023 reported no ROM)Fine-needle aspiration with cell block preparation, classified by the Milan System (MSRSGC)No comparator (single-arm proportion)Risk of malignancy (ROM) in MSRSGC category MN (Malignant)Pooled proportion (%) 97.7 [94.4, 101.1]
GRADE not reported
4 studies · 72 participants
Salivary gland cell block FNA samples in each MSRSGC category with known outcome (four studies; Kumar 2023 reported no ROM)Fine-needle aspiration with cell block preparation, classified by the Milan System (MSRSGC)No comparator (single-arm proportion)Risk of malignancy (ROM) in MSRSGC category BN (Benign neoplasm)Pooled proportion (%) 2.0 [-0.4, 4.5]
GRADE not reported
4 studies · 199 participants
Salivary gland cell block FNA samples in each MSRSGC category with known outcome (four studies; Kumar 2023 reported no ROM)Fine-needle aspiration with cell block preparation, classified by the Milan System (MSRSGC)No comparator (single-arm proportion)Risk of malignancy (ROM) in MSRSGC category NN (Non-neoplastic)Pooled proportion (%) 16.5 [-0.1, 34.0]
GRADE not reported
4 studies · 15 participants
Salivary gland cell block FNA samples in each MSRSGC category with known outcome (four studies; Kumar 2023 reported no ROM)Fine-needle aspiration with cell block preparation, classified by the Milan System (MSRSGC)No comparator (single-arm proportion)Risk of malignancy (ROM) in MSRSGC category SM (Suspicious for malignancy)Pooled proportion (%) 84.8 [70.0, 99.6]
GRADE not reported
4 studies · 19 participants
Salivary gland cell block FNA samples in each MSRSGC category with known outcome (four studies; Kumar 2023 reported no ROM)Fine-needle aspiration with cell block preparation, classified by the Milan System (MSRSGC)No comparator (single-arm proportion)Risk of malignancy (ROM) in MSRSGC category SUMP (Salivary gland neoplasm of uncertain malignant potential)Pooled proportion (%) 28.7 [18.8, 38.7]
GRADE not reported
4 studies · 77 participants

Included primary studies 5

Open in Studies
StudyYearAlso included byOutcomes it informs hereTrial data
Behaeghe 2020
The Milan system for reporting salivary gland cytopathology: Single center experience with cell blocks.
PMID:32506684
2020this review onlynot statednot extracted yet
Kumar 2023
Application of the Milan System for Reporting Salivary Gland Lesions and Its Cytohistological Correlation for Risk Stratification: A…
PMID:38021816
2023this review onlynot statednot extracted yet
Morand 2022
Application of the Milan system for reporting salivary gland cytopathology using cell blocks.
PMID:35750873
2022this review onlynot statednot extracted yet
Tabibi 2022
Ancillary studies on cell blocks from fine needle aspiration specimens of salivary gland lesions: A multi-institutional study.
PMID:35092649
2022this review onlynot statednot extracted yet
Tommola 2021
The Contributory Role of Cell Blocks in Salivary Gland Neoplasms Fine Needle Aspirations Classified by the Milan System for Reporting…
PMID:34679476
2021this review onlynot statednot extracted yet

Review question

ElementPlanned (methods)Found (results)
PopulationSalivary gland lesions diagnosed by FNA with cell block preparationSalivary gland FNA samples processed to cell blocks (n=1132)
InterventionCell block use with Milan System (MSRSGC) categorizationCell blocks with MSRSGC categorization (5 studies)
ComparisonNot specifiedNone
OutcomesDistribution of samples per MSRSGC category; risk of malignancy per categoryPooled category proportions (5 studies, n=1132); pooled ROM per category (4 studies)
Study designsStudies using cell blocks and the MSRSGC; case reports excluded3 retrospective and 2 prospective series, 2020 to 2023 (n=5)
TimingNot specifiedNot specified