What is known about this subject with respect to women and their families?
Acquired vulvar lymphangioma (AVL) is a lymphatic neoplasm that is localized to the vulva, often appearing in the setting of prior pelvic malignancy or surgery.
Diagnosis is often delayed, and the condition is commonly refractory to treatment.
What is new from this article as messages for women and their families?
This systematic review found that AVL is commonly associated with prior pelvic malignancy and the subsequent surgical treatment, radiation, or lymph node dissection, and is seen in the setting of inflammatory bowel disease.
The most reported treatment modalities for AVL were excision, followed by laser therapy, but there were limited outcomes data and no information on quality-of-life following therapy.
In most cases, patients had been treated with other therapies without improvement, and the diagnosis was delayed.
Introduction
Acquired vulvar lymphangioma (AVL), also known as acquired lymphatic anomaly or lymphangiectasia , and previously known as lymphangioma circumscriptum, is an uncommon condition characterized by an abnormality in the lymphatic vessels of the vulva.1 , 2 AVL is associated with obstructed or impaired pelvic lymph drainage,1 which can occur in the setting of chronic inflammatory or neoplastic conditions, as well as in the setting of prior surgical or radiation therapy that leads to lymphatic disruption. Studies have shown that AVL is often a late complication of anogenital and pelvic malignancies, with cervical carcinoma being the most common malignancy reported, but is also reported in inflammatory conditions including Crohn’s disease and infectious conditions such as tuberculosis.1 , 3 , 4
Clinically, AVL is often described as clusters of vesicular or verrucous papules,3 and superficial cases are sometimes described as resembling “frogspawn” with grouped clear to cloudy fluid-filled vesicles. Typically, vesicles have surrounding erythema and can appear as small confluent plaques (Fig. 1A ). These features are often accompanied by surrounding edema (unilateral or bilateral) (Fig.1B ) and even overlying eczematous change or lichenification. Symptoms may include pain, pruritus, discomfort, dyspareunia, and a burning sensation. In more superficial cases there may be fluid drainage and malodor.3 , 5–7 Information on the clinical course of AVL is limited, primarily due to few observational studies and the rarity of this condition.
Fig. 1.: Clinical images of vulvar-acquired lymphatic anomaly and edema. (A) Erythematous to purple papulovesicles on right labium minus, representing acquired vulvar lymphatic anomaly . (B) Left-sided labium minus edema, representing vulvar lymphedema.
In early cases, AVL may have nonspecific clinical and histologic findings, often resulting in a misdiagnosis of inflammatory dermatitis. In cases where vesicles are more apparent, the differential includes herpes and autoimmune blistering disorders. When AVL presents as verrucous or vascular papules, neoplastic etiologies including condyloma acuminata, molluscum contagiosum, angiokeratomas, and even vascular lesions may be considered.3 Because of this variability in clinical findings, diagnosis is usually confirmed by tissue biopsy.4 , 8 Histologically, AVL typically presents with multiple dilated lymphatics in the superficial dermis. The epidermis may have overlying hyperkeratosis, acanthosis, and spongiosis.9
Studies on treatment are limited with no guidelines to date on the medical or surgical management of AVL. Various treatments have been reported including surgical excision, ablative and nonablative laser therapies, and topicals3 , 10 , 11 and all have been associated with a high rate of recurrence. The aim of this study is to perform a systematic review on cases of AVL to summarize the epidemiologic and clinical findings and identify associated comorbidities and treatment options.
Materials and methods
Literature search
This study was performed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (Fig. 2 ). A primary literature search was conducted using PubMed, CINAHL, and OVID, from all years to 2022. Two authors independently searched and cross-checked with the following search terms: (lymphangioma circumscriptum OR microcystic lymphatic malformation OR lymphangioma OR lymphangiectasia ) AND (vulva OR vagina).
Fig. 2.: Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRIMSA) flow diagram of literature search and article selection.
Article selection
Articles published in English from all years were considered for eligibility. Articles were excluded if they discussed congenital lymphangioma circumscriptum or nonvulvar presentations.
Data extraction
Included studies were summarized using a data extraction form with the following variables extracted: number of patients reported in the study, disease association, treatments for prior pelvic malignancy, patient ages, ethnicity, time between onset of AVL symptom onset and diagnosis, symptoms, clinical findings, treatment for AVL, duration/number of treatments, duration of follow-up, efficacy, reported recurrence, interval for follow-up, prior treatments, histopathology, status of quality of life measures, and inclusion of clinical or histopathological photos.
Results
Literature review
The initial literature search yielded 290 articles. Overall, 146 were nonduplicate articles. A total of 54 articles were excluded based on their title and/or abstract, including 48 that were not related to AVL and 8 that were not available in the English language. No additional articles were identified based on a search of article references. Ultimately, 78 articles,1 , 3–79 comprising a total of 133 patients, met the eligibility criteria and were included in this qualitative analysis. Articles were published between 1979 and 2022. The eligible articles consisted of case series, case reports, literature reviews, and a retrospective chart review. Relevant variables extracted from each article are included in Table 1 .
Table 1 -
Variables extracted from studies included in literature review
PMID
Type of study
Number of patients
Prior pelvic malignancy
Other disease association
Prior radiation
Prior lymph node dissection
Prior surgery or chemotherapy
Patient age
AVL duration before diagnosis
Treatment type (T = topical therapy, PT = physical therapy, L = laser, S = surgical, or other)
Treatment specifics (procedure, laser settings, medication)
Interval for follow-up
1
34736616
Case report
1
None
Crohn Disease
None
None
None
56
3 years
T
Clobetasol 0.05%
None
2
34877687
Review, case Series
6
n = 6
None
n = 6
n = 5
None
Median: 61, Range: 44–72
median interval between malignancy diagnosis > acquired vulvar lymphangioma circumscriptum (AVLC) diagnosis: 10 years (0–32 years)
S
Excision (n = 5), Unknown (n = 1)
1.5 years, 3 years, 0.04 years, Unknown (n = 3)
3
14761137
Case report
1
None
Pregnancy
None
None
None
35
5 years
None
None
None
4
2644602
Case report, review
1
None
None
None
None
None
42
None
S
Excision
6 weeks
5
8408931
Case report
1
None
None
None
None
None
46
None
None
None
None
6
27329721
Case report
16
n = 9
None (n = 7)
n = 7
n = 3
Hysterectomy (n = 4), Salpingo- oophorectomy (n = 3), Wide local excision (n = 1)
Median: 55, Range: 43–81
11.3 years between cancer treatment and vulvar lymphangioma circumscriptum (VLC) development (range: 5–20 years)
Unknown
Unknown
None
7
15488131
Case report
1
None
None
None
None
None
17
4
S
Excision
2 weeks
8
22529452
Case report
1
None
Tuberculosis
None
None
None
35
1 year
S
Excision (n = 2)
None
9
8914364
Case report
1
None
Recurrent cellulitis
None
None
None
42
7 months
T
IV antibiotics and local antiseptic
5 years
10
7747544
Case report
1
None
None
None
None
None
76
2 years
T
None
None
11
26967121
Literature review and case report
5
n = 2
Crohn’s Disease
n = 1
None
None
Median: 50, Range: 18–68
None
L, S
YAG Laser & Excision (n = 2), Electrodessication and curettage (n = 1), Excision (n = 1)
None
12
23595194
Case report
1
None
None
None
None
None
24
since teenager
Other
Compression therapy
None
13
25706522
Case report
1
n = 1
None
n = 1
None
Cystectomy (n = 1)
69
3 years
None
None
None
14
11270296
Case report
1
None
None
None
None
None
44
6
None
None
None
15
21464721
Case series, review
1
None
None
None
None
None
39
None
S
Excision
None
16
26374361
Case series, review
3
None
None
None
None
None
Mean: 33.3, Standard Deviation: 8.4
None
None
None
None
17
18312992
Case series, review
1
n = 1
None
n = 1
n = 1
Hysterectomy (n = 1)
63
4 years
S
Excision
28 weeks
18
22615519
Case series
2
n = 2
None
n = 2
None
Hysterectomy (n = 2)
65, 44
10 years, 16 years
S
Excision
Regular
19
30812056
Case report
1
None
None
None
None
None
61
1.5 years
S
Excision
4 weeks
20
16803506
Case series, retrospective study
1
n = 1
None
n = 1
None
None
40
6 months –2 years
S
Excision
None
21
22199085
Case report (letter)
1
None
None
None
None
None
55
2 years
S, L
Hysterectomy, CO2 laser vaporization (defocused mode with a 2 mm spot size)
15 weeks
22
23130218
Case report (letter)
1
n = 1
None
None
n = 1
None
50
3 months
None
None
None
23
2684843
Case series
3
n = 1
Crohn’s Disease (n = 2)
n = 1
None
Hysterectomy (n = 1)
Median: 38, Range: 37–38
2 years (n = 3)
L, S, Other
Excision, cryotherapy
2 months (n = 1)
24
8286236
Case report
2
n = 2
None
n = 2
None
Hysterectomy (n = 2)
49, 50
None
S
Excision
18 months
25
761961
Case report
1
None
Tuberculosis (n = 1)
None
None
Lymph node incision (n = 1)
62
30 years
T, L
Isonicotinic acid hydrazide, Ethambutolcholride, Rifampicin, Electocoagulation
6 months
26
30289772
Case report (letter)
1
n = 1
None
n = 1
None
Hysterectomy (n = 1)
78
10 years
None
None
None
27
16219410
Case series, review
3
n = 2
Tuberculosis (n = 1)
n = 1
n = 1
Complete surgical resection (n = 2), Hysterectomy (n = 2)
Median: 67, Range: 53–71
None
L
Laser therapy (n = 1); CO2 laser vaporization (n = 2)
4 months, 22 months, 90 months
28
21547888
Case report
2
n = 2
None
n = 2
None
Hysterectomy (n = 2)
56, 68
None
S
Excision
7 months, 20 months
29
24133609
Case report
1
None
Crohn’s Disease
None
None
None
35
Several years
None
None
None
30
12218845
Case Report
2
n = 2
None
n = 2
n = 2
Hysterectomy (n = 2)
75, 46
10 years
L
CO2 laser vaporization (n = 2)
3 months 8 months
31
28461089
Case series
1
None
None
None
None
None
68
None
None
None
None
32
25099515
Case report (letter)
1
None
Pregnancy (n = 1)
None
None
None
28
1 month
None
None
2 months after delivery
33
22802470
Case report
1
None
Breast Cancer (n = 1)
None
None
Masectomy (n = 1), Chemotherapy (n = 1)
46
8 years
S
Excision (n = 2)
4 weeks post-op, 3 month return
34
1694423
Case report (letter)
1
n = 1
None
n = 1
None
Complete surgical resection (n = 1)
75
2 years
L
CO2 laser vaporization- multiple sessions.
18 months
35
4065708
Case report
1
n = 1
None
None
n = 1
Hysterectomy (n = 1)
51
None
None
None
None
36
29451158
Case report (letter)
1
None
Klippel-Trenaunay syndrome (n = 1)
None
None
None
31
4 years
None
None
None
37
10430005
Case report
1
n = 1
None
n = 1
None
Complete surgical resection (n = 1)
70
4 years
L
CO2 laser vaporization
4 weeks after wound healing: 5 more laser sessions
38
34621964
Case series
2
None
Hiradenitis suppurativa (n = 2)
None
None
None
44, 46
0
S
Excision
3 years (n = 2)
39
15752314
Case report
1
None
Tuberculosis (n = 1)
None
None
None
22
5 years
Other
Oral isoniazid, rifampicin, pyearazinamide and ethambutol
None
40
34837392
Case report
1
n = 1
None
n = 1
None
Hysterectomy (n = 1)
61
None
L
CO2 laser vaporization
None
41
17684378
Case report
1
n = 1
None
None
n = 1
Hysterectomy (n = 1)
73
2 years
S
Lymphaticovenular Anastomosis (LVA) surgery
6 months
42
10235381
Case report
1
None
Crohn’s Disease
None
None
None
44
7 months
Other
Podophyllin
None
43
1427807
Case report
1
None
None
None
None
None
20
2 years
S
Vulvectomy
9 months
44
28283172
Case report
1
None
None
None
None
None
47
None
S
None
None
45
11270298
Case report
1
n = 1
n = 1
None
None
79
1 year
T
Topical mid-potency corticosteroid
None
46
15250899
Case report
1
None
None
None
None
None
20
10 years
None
None
None
47
22901902
Case report
1
None
None
None
None
None
44
3 years
T, Other
Gentian Violet 1% solution, Cetrizine hydrochloride
None
48
17656926
Case Report
1
None
None
None
None
Surgical resection (n = 1)
48
5 years
S
Excision
1 year
49
11776513
Case report, review
1
None
None
None
None
None
48
3 years
S
Excision
16 months
50
22361479
Case report
1
None
None
None
None
None
44
None
T
Antihistamines, emollients
None
51
34149227
Case report
1
None
None
None
None
None
25
1 month
S
Excision
None
52
26167062
Case report
1
None
None
None
None
None
60
4–5 years
S
Excision
1 year
53
10609498
Case report, review
1
n = 1
None
n = 1
n = 1
Hysterectomy (n = 1), Salpingo- oophorectomy (n = 1)
65
10 years
L, T, Other
CO2 laser vaporization (multiple procedures), Silver sulfadiazine
6 weeks
54
19396719
Case series
8
n = 8
None
n = 7
n = 7
Surgical excision (n = 7)
Median: 48, Range: 39-63
None
S
Excision (n = 5)
None
55
34263326
Case report
1
n = 1
None
n = 1
n = 1
Vulvectomy (n = 1), chemotherapy (n = 1)
70
3 years
Other
Sclerotherapy
4 weeks
56
22026919
Case report
1
n = 1
None
n = 1
n = 1
Hysterectomy (n = 1)
42
4 years
S, L
Excision & CO2 laser vaporization (1st treatment), excision (2nd treatment)
None
57
25468056
Case report
1
None
None
None
None
None
67
3 years
None
None
None
58
15228436
Case report
2
n = 2
None
n = 2
None
None
30, 45
1 week, unknown (max 2 years)
Other- penicillin
Penicillin
6 months
59
28242996
Case report
1
None
Tuberculosis (n = 1)
None
None
None
25
None
None
None
None
60
24396614
Case report
2
None
None
None
None
None
55, 60
25 years, unknown
T
Topical antihistamine
None
61
27331134
Case report
1
n = 1
None
n = 1
None
Chemotherapy (n = 1)
55
3–4 years
S
Excision
5 months
62
12495108
Case report
1
None
None
None
None
None
48
None
S
Oral antibiotics followed by excision
2years
63
18397567
Case report
1
None
Pregnancy
None
None
None
30
4 months
None
None
None
64
20004630
Case series
4
Cervical cancer (n = 1)
Hodgkin lymphoma (n = 3)
None
None
None
Median: 44.5, Range: 28–57
32.3 years, 10.6 years, 2.9 years, 0.2 years
S
Prophylactic antibiotic therapy (amoxicillin clavulanic acid) and excision
Median: 53 months
65
12738156
Case report, review
1
None
None
None
None
None
30
3 years
S
Excision
None
66
367022
Case report
1
None
None
None
None
None
38
7 years
S
Excision
None
67
25190008
Case report
1
n = 1
None
n = 1
None
Hysterectomy (n = 1)
76
6 years
Other
Cryotherapy
8 months
68
26156111
Retrospective chart review
8
n = 8
None
n = 4
n = 8
None
Median: 61.5, Range: 36-77
None
S
Excision (n = 8)
None
69
1765960
Case report
2
None
None
None
None
None
32, 35
1 year, 7 years
S (n = 2), L (n = 1)
Excision with laser vaporization, Excision
4 months
70
27502262
Case report
1
None
None
None
None
None
20
10 years
None
None
None
71
1669286
Case report
1
None
Tuberculosis (n = 1)
None
None
None
40
3 months
S
Excision
None
72
33423429
Case report
1
n = 1
None
n = 1
n = 1
71
None
None
None
None
73
31757874
Case report
1
None
HSV (n = 1)
None
None
None
43
6 years
Other
Lymphatic drainage, shave excision
None
74
28791276
Case report
1
Rectal cancer (n = 1)
None
n = 1
None
None
68
1year
L, S
Electrocautery and CO2 laser vaporization
6 months
75
20580481
Case report, letter
1
None
None
None
None
None
36
8 years
S
Excision
1 year
76
20300370
Case report
1
None
None
None
None
None
18
5 years
L, Other
Radiofrequency ablation, Sclerotherapy
Monthly x3, 6 months, 2 years
77
18319007
Case report
1
None
None
None
None
None
45
8 years
T, other
Topical antihistamines and emollients, Cryotherapy
None
78
6931304
Case report
1
n = 1
None
n = 1
n = 1
None
54
22 years
None
None
None
Clinical presentation and diagnosis
The age distribution ranged from 17 to 81 with a median of 49 years. There were 5 cases in pediatric patients that were not classified as congenital lymphangioma . Due to the lack of ethnicity data included, we could not determine any ethnic distribution for AVL. In studies that reported diagnostic delay, there was a mean delay of 5 years until the time of diagnosis. The most common symptoms reported included: clear oozing discharge, pain, and pruritus. Eleven patients were asymptomatic. The most common clinical findings included: multiple circumscribed papulovesicular lesions of varying sizes, often filled with clear fluid. Anatomical distribution was varied and involved the mons pubis, one or both labia majora, one or both labia minora, entire vulva, or entire vulva with spread to the thigh. All cases were biopsy-proven.
Treatment and outcomes
A total of 58 studies consisting of 96 patients evaluated treatment modalities. Of these, the most common treatment modality was surgery, followed by laser. Topical therapies included clobetasol cream and other topical corticosteroids, local antiseptics, isonicotinic acid hydrazide, ethambutol chloride, rifampicin, gentian violet 1% solution, emollients, silver sulfadiazine 1%, imiquimod and antihistamines. One study mentioned the use of physical therapy or lymphedema therapy. Follow-up was variable and not reported in most studies.
Of the 36 case reports that listed surgery as the treatment modality, 23 (64%) reported no evidence of recurrence for a total of 31 patients. Seven reports of 21 patients did not mention the efficacy of surgical excision, and all other reports noted some type of recurrence. There were 13 case reports which reported laser as a treatment modality. Of these, 6 reported a combination of topical or surgical treatment modalities in addition to laser therapy. Five reports of 6 patients (38%) had no evidence of recurrence. One report did not include treatment efficacy, and all other reports noted recurrence, most being minor or lesion size smaller than the primary lesions. The analysis also included 11 patients that were treated with topical therapies. Treatment outcomes were rarely reported, with some just noting symptom improvement. Most outcome measures relied on clinical improvement in signs and symptoms as evaluated by the provider. Quality-of-life outcome measures were not included in any of the studies.
Disease associations
Although 68% of cases had a disease association, the most common being a prior diagnosis of pelvic malignancy (cervical, vulvar, vaginal, endometrial, or bladder). Inflammatory bowel disease (IBD) was the second most common disease association and was seen in 5% of cases. There were 3 cases (2%) presenting with lesions associated with pregnancy. Most patients had prior radiation or surgical treatment with 36% (n = 48) treated previously with radiation, 30% (n = 40) with prior lymph node dissection, and 27% (n = 36) with prior surgical resection without lymph node dissection. While the other 32% of cases were idiopathic, many did evaluate for other disease associations or malignancies with a variety of modalities. The most used diagnostic tools were screens for sexually transmitted infections such as syphilis, human immunodeficiency virus, or hepatitis. Other tests included ultrasound, abdominal and pelvic computed tomography or magnetic resonance imaging, and pap smears.
Discussion
In this review, we summarize the clinical findings, treatment modalities, and disease associations of AVL. This is an underrecognized condition and diagnosis is often delayed with 84% of cases in our study reporting diagnostic delay. Prior studies have evaluated the association between AVL and malignancy and reported that AVL is a late complication of prior surgery or chemotherapy to treat anogenital and pelvic malignancies, with the most common preceding malignancy being cervical carcinoma.3 AVL is likely more common in pelvic and anogenital cancer survivors than reported as it is often misdiagnosed. Because it can present initially with nonspecific inflammation and symptoms of pruritus/burning, it may be misdiagnosed as other vulvar conditions including the genitourinary syndrome of menopause, lichen sclerosus, and contact dermatitis.
AVL is thought to develop due to disruption in lymphatic drainage, through surgical resection, lymph node dissection, radiation, or even mass effect of anogenital/pelvic malignancies.3 Because of the changes in drainage of lymphatic fluid, many cases of AVL have unilateral or bilateral vulvar edema . Vulvar edema alone may be an early presenting sign. Other conditions that lead to systemic inflammation, including IBD, specifically Crohn’s disease, have been associated with AVL. The mechanism is likely through long-standing edema, fibrosis, and inflammatory changes. Both vulvar edema and AVL are nonspecific findings that can be a presenting sign in Crohn’s disease or occur even in the setting of Crohn’s disease where the gastrointestinal disease is well-controlled or not symptomatic.1 , 10 , 29 , 34
Overall, a thorough examination, history, and high clinical suspicion is required to diagnose these conditions early. We recommend that in patients presenting with AVL with no prior diagnosis of IBD or malignancy, a thorough review of systems and age-appropriate screening should be performed. If there is a concern for pelvic malignancy, imaging, and appropriate lab work should be considered in the appropriate patient. If there is suspicion of IBD, appropriate workup including a fecal calprotectin level, may be considered.
Evidence-based guidelines for the management of AVL are lacking, leaving no clear standards for treatment. Surgical excision was found to have the lowest rate of recurrence when compared to laser and topical treatments, however, follow-up duration and reported outcomes were not standardized, making the evaluation of therapy efficacy challenging. Additionally, it is important to note that wide local excisions/labiectomy/vulvectomy may carry increased morbidity and functional impairment compared to nonsurgical methods. Overall, information regarding the duration of therapy, treatment time to resolution or recurrence, and efficacy measures were limited and variable.
Treatment requires multidisciplinary care and should focus on addressing any underlying lymphatic changes, managing any underlying inflammatory condition, and utilization of skin-directed therapies and barrier agents, as well as addressing symptoms of pruritus and pain. While only mentioned in one of the articles click or tap here to enter text., these authors suggest in addition to the above, referral to a physical therapist with specialized training in the management of genital edema.19
The main limitation of this review is the study design as data was derived predominantly from case reports and case studies and thus, our study is limited by interstudy variability and heterogeneity of results. Many studies were missing variables that are useful for providing diagnostic or therapeutic recommendations.
Summarizing the data from existing studies provides further information on the characteristics and treatment modalities of AVL. However, prospective studies are needed to further characterize this condition to better understand true incidence and prevalence, risk factors, and pathogenesis, with the goal of earlier diagnosis and development of treatment guidelines. Additionally, because symptoms can be debilitating, future studies should consider incorporating quality-of-life outcome measures.
Conflicts of interest
None.
Funding
None.
Study approval
N/A
Author contributions
AD, AB, and CK participated in screening articles, writing the manuscript, and editing the draft.
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