Open Access

A case report of retiform hemangioendothelioma as pleural nodules with literature review

Diagnostic Pathology201510:194

https://doi.org/10.1186/s13000-015-0433-7

Received: 30 June 2015

Accepted: 17 October 2015

Published: 26 October 2015

Abstract

Retiform hemangioendothelioma (RH) is a rare low-grade variant of angiosarcoma mostly reported on dermis or subcutaneously. A 30-year-old woman suffering from dry cough, dyspnea and pleural effusion has been described. Distinctive symptoms and lesions on high resolution computed tomography (HRCT) scan and common histological, immunological feature are discussed. Diagnosis was made by thoracoscopy as RH.

Keywords

Retiform hemangioendothelioma Pleural effusion Breast cancer CD31 CD34 D2-40

Background

RH is known as a rare kind of low-grade malignant angiosarcoma with high rate of local recurrence and low potential of metastasis which is a sparsely distributed disease counting 35 cases (Table 1) whereas none of them is related to pleura or lung [1]. Given the lacking information of pleural RH, its clinical manifestation, HRCT presentation and thoracoscopic appearance of a female patient are presented. The definitive diagnosis was made due to pathological observation and immunochemical staining. The prognosis is unpredictable since the tumor can affect multiple organs [2]. Unfortunately, consensus has not been reached on if there is effective treatment to this tumor.
Table 1

Summary of clinical features of reported RH cases

Author (N)

Age/Gender

Site

Immunochemistry

Metastasis

Treatment

Survival

Calonje (15)

9–78/9 F,6 M

6:lower limbs

ND

1/15

ND

ND

4:upper limbs

3:Trunk

1:Penis

1:Scalp

Fukunaga (1)

75/F

Lower limb

CD31, vimentin, UEA-1 (all), CD34, f-VIII (part)

0/1

ND

ND

Duke (1)

30/F

Upper limb, trunk

CD31, f-VIII

0/1

Excision

>10 years

Samz-Trelles (1)

11/M

Lower limb

Vimentin, f-VIII

0/1

Excision

>4 years

Schommer (1)

73/F

Trunk

CD31,UEA-1, f-VIII

0/1

Excision, RT, IT

>1 year

Darouti (1)

32/F

Lower limb

f-VIII

ND

ND

>1.5 years

Tan (1)

19/F

Lower limb

ND

0/1

Excision

>14 months

Ioannidon (1)

55/F

Upper limb

CD31

0/1

Excision

>4 years

Parson (1)

17–71/4 F,0 M

1:upper limb

CD31(4/4),

ND

ND

ND

1:trunk

D2-40(1/4),

1:head

VEGFR3(0/4)

1:lower limb

Bhutoria (1)

35/F

Trunk

ND

Lymph node

Excision

ND

Emberger (1)

17/M

Trunk

CD31,D2-40

0/1

Excision

>3 years

Zhang (1)

61/F

Head

CD34, f-VIII, vimentin

0/1

Excision(twice)

6 months

Aydıngöz (1)

60/F

Lower limb

ND

0/1

Excision

>2 years

Hirsh (1)

44/M

Trunk

CD31

0/1

Resection,chemoradiation

>36 months

Keiler (1)

11/F

Upper limb

ND

0/1

Excision

ND

O’Duffy (1)

18/M

Head

ND

Lymph node

Excision, RT

ND

Albertini(1)

6/F

Trunk

D2-40

Lung

Excision

6 months

Choi (1)

20/M

Upper limb

f-VIII

ND

Excision

ND

Couceiro (1)

50/F

Upper limb

ND

ND

Excision

>4 years

Mota (1)

26/F

Trunk

CD31, D2-40

ND

Excision

ND

Al-Faky

9/F

Head

CD31, CD34, D2-40, f-VIII

ND

Excision

>6 years

ND not documented, M male, F female, UEA-1 ulex europaeus agglutinin 1, f-VIII factor VIII-related antigen, RT radiotherapy, IT immunotherapy

Case presentation

Clinical history and radiology

A 30-year-old female patient was admitted to pulmonary department because of dyspnea and dry cough denying chest pain, hemoptysis, fever, weight loss or other systemic symptoms. Her symptoms were stable and had not been given any medication prior to admission. Her chest X-ray by local hospital showed pleural effusion on the right side. She received modified radical mastectomy in 2006 removing a breast mass on her right chest. The biopsy confirmed a diagnosis of poorly-differentiated invasive ductal carcinoma with axillary lymph nodes metastasis therefore the patient received adjuvant chemotherapy and radiotherapy. Her father died of liver cancer. The rest of her personal history, social history and the review of systems were unremarkable. Decreased vocal fremitus and dullness of percussion on her right thorax were detected in physical examination. No enlarged superficial lymph nodes were palpated and laboratory tests revealed normal level of carcino-embryonic antigen (CEA). Her ultrasonic examination of abdomen and pelvis cavity alarmed no metastatic signs. The patient’s HRCT results showed merely pleural effusion on the right side (Fig. 1). No residual mass, enlarged lymph nodes of hilar or lesion on pleura were observed. Laboratory tests of her pleural effusion samples contained erythrocytes and leukocytes and it was exudates. Furthermore, cytological examination reported large amount of lymphocytes without atypical or carcinomatous cells. Scattered greyish variously sized nodes were discovered on costal pleura in thoracoscopy. The lesion presented themselves as exophytic masses surrounded by indistinctive borders with a tendency to fuse together. Pulmonary and diaphragmatic pleura were free from infiltration. Rechecking of chest X-ray complied with her former HRCT scan.
Fig. 1

HRCT scan of the patient before thoracoscopy. Small amount of unilateral pleural effusion was detected on the right side of the patient. None visible pleural nodes were reported. (Opacity showed in the patient’s right lung which has been proved to be bacterial infection because it disappeared after treatment of antibiotics)

Histology and immunohistochemistry

Histological and immunological examination of biopsy specimen pictured disarranged, jagged, blood vessels of thin walls and slit-like fissures were prevailing. At higher magnification the vessels’ walls were lined with highly nuclei/cytoplasm ratioed endothelial cells with minimal cytological atypia and mitosis. Atypical cells protruding into lumina mimicking “hobnail” appearance or endothelial papillae was absent as well as their invasion into adjacent tissues. Infiltration of lymphocytes was also rare (Fig. 2). Combined with immunohistochemical staining positive for CD31, CD34, D2-40 (Fig. 3) and negative for CrebB-2, GCDFP-15, CEA, CA15-3, S-100, Ki-67 and myogenin, which confirmed the diagnosis and ruled out the possibility of breast cancer and other diagnosis, a diagnosis of RH was established.
Fig. 2

Hematoxylin and eosin staining of the patient’s sample. Hematoxylin and eosin staining presented atypical cells forming disarranged and abnormal lumina. Some of the “vessels” were complete and contained erythrocytes and main part of the tumor consisted of zigzag slits. No atypia or mitosis of nuclei showed in the cells meanwhile cytoplasm was insufficient

Fig. 3

Immunohistochemical staining of the patient’s sample. Immunohistochemical staining for D2-40 expression was positive

Results

According to our knowledge and clinical experience, endostatin was recommended for treatment. The patient revisited 6 months later with relieved symptoms when her HRCT showed diminished and encapsulated pleural effusion after receiving symptomatic treatment and passed away at home in 2013.

Discussion

Hemangioendothelioma (HE), an intermediate lesion between hemangioma and angiosarcoma, has been incipiently delineated as a kind of vascular tumor highlighted by its marginal biological features [3]. It generally appears on skin or in soft tissues and extensively includes HE of epithelioid, kaposiform, retiform, composite and pseudomyogenic (also known as epithelioid sarcoma-like HE) subgroups and papillary intralymphatic angioendothelioma (also known as Dabska tumor). Malignancy of pseudomyogenic HE has recently been re-recognized [4]. Definitive diagnosis of varied types of this tumor is based on histopathlological morphology and immunohistochemical markers [5]. HE on pleura are limitedly documented as majority of them have been confirmed as epithelioid hemangioendothelioma (EH). Though EH favorably links to lung and pleura according to published cases, there has never been a description of its counterpart-retiform hemangioendothelioma on pleura.

Retiform hemangioendothelioma is a low-grade variant angiosarcoma which has been first introduced by Calonje in 1994 [6]. Hyperchromatic nuclei without mitosis suggests its intermediate characters [7] and indicates discrepant prognosis.

RH demonstrates a predilection for female adults [6]. The majority of RH cases have been described as lesions on trunk or limbs [8] whereas penis and scalp were occasionally involved [9]. Features of RH’s lesion vary among individual patients expressing as masses, which is hyperhidrotic, or erosion [8, 10, 11]. Exophytic pattern seems to be more prevailing [8]. All the lesions in this patient were surrounded by “poor circumscription” as a presentation of its histological character.

Histological diagnosis lays the foundation of clinical diagnosis also plays the key role in differentiating RH from angiosarcoma and other subtypes of hemangioendothelioma. RH comprises of blood vessels ”weaving a net” by infiltrating into bundles of collagen. Endothelial cells fashion intraluminal papillea with scarce cytoplasm [8, 12]. However, pathological sample in this case for histological examination may accidentally be a single component of “composite hemangioendothelioma” which contains retiform HE, epithelioid HE, angiosarcoma, spindle cell hemangioma, lymphangioma, arteriovenous malformation [13] or part of these. This assumption is drawn from the fact that excision of gross sample has not be performed taking the fact that EH tends to form in lung into consideration [14].

Histochemical markers of RH include CD31, D2-40, CD34, factor VIII-related antigen [15, 16] among which CD34, factor VIII-related antigen have been consistently reported. CD34 and CD31 symbolize endothelial lineage and D2-40 expresses on other kinds of lymphatic hemangioendothelioma or hemangioma [17, 18]. Controversy, nevertheless, has been aroused by Amy Parson's demonstration of 3 negative cases of D2-40 in 4 RH patients [19].

Though histological and clinical features permits differential diagnosis between RH and other vascular tumors [20], it shares a number of similarities with hobnail hemangioma which has been considered as it benign counterpart. However, hobnail hemangioma features shortage of papillae protruding into lumina and restricted location [21] while prominent lymphatic infiltration and extensive lesion (dermis and subcutis) are widely applied to make the RH diagnosis [22]. Moreover, definitive diagnosis of a papillary lymphatic angioendothelioma with partial “netlike” camouflage and D2-40 positivity was in arguement [21].

The etiology of RH remains obscure. Latent relations between malignant medical history and RH should be elucidated [2, 9]. In this case no evidence supports the internal link between RH occurence and the past radiotherapy.

No tumor-related [8] deaths in RHs are observed under the circumstance of low metastasis. However, a locally invasive RH in China and a metastatic RH in a six-year-old girl turned out to be lethal [23]. Although adjuvant immunotherapy and radiotherapy  have been proved to be effective in several cases, none agreed tumor-responding treatments are recommended unless a complete surgical excision is performed [2427]. Amanda and her colleagues, however, proposed specific appearance on dermoscopy as practical assistance to diagnosis and therapy [28].

Conclusions

In summary, a case of RH situating on pleura has been depicted which exhibited peculiar pathological, immunological features and lesions. It has been reported as intrathoracic nodules predisposing a patient to unilateral pleural effusion. However discussion has been placed on the causes and treatment of RH. It implies that RH on location other than skin or subcutis may lead to corresponding symptoms or even threatened survival.

Consent

Written informed consent was obtained from the patient for publication of this Case Report and any accompanying images. A copy of the written consent is available for review by the Editor-in-Chief of this journal.

Abbreviations

RH: 

Retiform hemangioendothelioma

CEA: 

Carcino-embryonic antigen

HRCT: 

High resolution computed tomography

HE: 

Hemangioendothelioma

EH: 

Epithelioid hemangioendothelioma

Declarations

Acknowledgements

We thank Dr. Xia Wu at Department of Pathology and Dr. Juan Chen at Department of Radiology in the 2nd Xiangya Hospital for offering information. We thank Prof. Hong Peng, Prof. Yan Chen at Department of Respiratory Medicine in the 2nd Xiangya Hospital and Dr. Ye Gan at Yale University for helping drafting the manuscript. We thank Dr. Bowen Xie from the Center for Molecular Medicine of Central South University for editing the pictures. Special gratitude should be shown to Prof. Daiqiang Li at Department of Pathology in the 2nd Xiangya Hospital and Prof. Jihe Li at Department of Pathology in the 1st Xiangya Hospital for professional opinions in making the diagnosis. This study is financially supported by grants from the National Key Clinical Specialty Construction Projects.

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

Authors’ Affiliations

(1)
Department of Internal Medicine, Second Xiangya Hospital of Central South University

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Copyright

© Liu et al. 2015

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