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    Methods

    NICE identified studies and reviews relevant to LVA during ALND or ILND for preventing secondary LE from the medical literature. The following databases were searched between the date they started to 20 February 2023: MEDLINE, PREMEDLINE, EMBASE, Cochrane Library and other databases. Trial registries and the internet were also searched (see the literature search strategy). Relevant published studies identified during consultation or resolution that are published after this date may also be considered for inclusion.

    The following inclusion criteria were applied to the abstracts identified by the literature search:

    • Publication type: clinical studies were included with emphasis on identifying good quality studies. Abstracts were excluded if they did not report clinical outcomes. Reviews, editorials, and laboratory or animal studies, were also excluded and so were conference abstracts, because of the difficulty of appraising study methodology, unless they reported specific adverse events that are not available in the published literature.

    • Patients with cancer conditions needing ALND or ILND.

    • Intervention or test: (preventative) LVA.

    • Outcome: articles were retrieved if the abstract contained information relevant to the safety, efficacy, or both.

    If selection criteria could not be determined from the abstracts the full paper was retrieved.

    Potentially relevant studies not included in the main evidence summary are listed in the section on other relevant studies.

    Find out more about how NICE selects the evidence for the committee.

    Table 4 literature search strategy

    Databases

    Date searched

    Version/files

    MEDLINE (Ovid)

    21/02/2023

    1946 to February 20, 2023

    MEDLINE In-Process (Ovid)

    21/02/2023

    1946 to February 20, 2023

    MEDLINE Epubs ahead of print (Ovid)

    21/02/2023

    1946 to February 20, 2023

    EMBASE (Ovid)

    22/02/2023

    1974 to 2023 February 22

    EMBASE Conference (Ovid)

    22/02/2023

    1974 to 2023 February 22

    Cochrane Database of Systematic Reviews – CDSR (Cochrane Library)

    21/02/2023

    Issue 2 of 12, February 2023

    Cochrane Central Database of Controlled Trials – CENTRAL (Cochrane Library)

    21/02/2023

    Issue 2 of 12, February 2023

    International HTA database (INAHTA)

    22/02/2023

    -

    The following search strategy was used to identify papers in MEDLINE. A similar strategy was used to identify papers in other databases.

    MEDLINE search strategy

    1 Anastomosis, Surgical/ 34,790

    2 Anastomos*.tw. 73,401

    3 1 or 2 86,709

    4 Lymphedema/su [Surgery] 1,648

    5 Lymphed*.tw. 8,138

    6 4 or 5 8,670

    7 3 and 6 715

    8 (MLVA or LVA or LYMPHA).tw. 2,457

    9 ((Lymphaticoven* or Lymphoven* or Lymphatic-ven*) adj4 anastomos*).tw. 625

    10 Lymph Node Excision/ 37,512

    11 (Lymp* node adj4 (excision* or dissect* or ablat* or cut* or remove*)).tw. 21,147

    12 ((Axill* or Inguin*) adj4 lymph node adj4 (excision* or dissect* or ablat* or cut* or remove*)).tw. 3,960

    13 (ALND or INLD).tw. 1,419

    14 Lymphangitis/su [Surgery] 19

    15 Lymphangit*.tw. 1,376

    16 lymphatic microsurgical preventive healing approach.tw. 9

    17 Lymphedema/pc 578

    18 or/7-17 52,118

    19 *Breast Neoplasms/ 279,369

    20 *Penile neoplasm/ 5,089

    21 *Vulvar neoplasm/ 7,389

    22 *skin neoplasm/ 118,043

    23 *Melanoma/ 79,301

    24 or/19-23 450,891

    25 Lymphedema/ 10,411

    26 24 and 25 2,104

    27 Breast Cancer Lymphedema/ 384

    28 BCRL.tw. 373

    29 ((Breast* or penile* or vulva* or skin* or melanom*) adj4 (neoplasm* or cancer* or carcino* or adenocarcino* or tumour* or tumor* or malignan* or lump* or metast*) adj4 lymphed*).tw. 1,135

    30 or/26-29 2,579

    31 18 and 30 1,000

    32 animals/ not Humans/ 5,060,889

    33 31 not 32 995

    34 limit 33 to english language 893

    35 limit 34 to ed=20150101-20230228 449