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Case Reports in Rheumatology
Volume 2011, Article ID 565142, 4 pages
http://dx.doi.org/10.1155/2011/565142
Case Report

Report of a Rare Case of Gorham-Stout Disease of Both Shoulders: Bisphosphonate Treatment and Shoulder Replacement

1Klinik für Unfallchirurgie und Orthopaedie, DRK Kliniken Berlin Koepenick, Salvador-Allende-Straße 2-8, 12559 Berlin, Germany
2Institut für Pathologie Hannover, Berliner Allee 48, 30175 Hannover, Germany

Received 23 June 2011; Accepted 16 August 2011

Academic Editors: R. Cevik, C. Pineda, C. Saadeh, and F. Schiavon

Copyright © 2011 Eike Garbers et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Massive osteolysis known as Gorham-Stout disease is a rare idiopathic disorder typically affecting long bones in a unifocal pattern. Angiomatosis is strongly connected to the osteolysis. Weather angiomatosis is the cause or the result of osteolysis is subject of intense discussion (Kawasaki et al. (2003), Möller et al. (1999), Radhakrishnan and Rockson (2008)). There are about 200 cases described since 1955. Our patient is a 77-year-old female patient with osteolyses of both shoulders involving the proximal humerus, lateral clavicle, and the glenoid. Under bisphosphonate therapy, the progressive osteolysis stopped on the right side and showed progression on the left. With the patient complaining about severe rest pain and impaired function, we performed surgical reconstruction by implantation of total shoulder prosthesis three months after onset of symptoms. Our case shows a possibility of primary and early surgical reconstruction with good clinical outcome.

1. Introduction

Osteolyses are common findings on plain X-rays of the skeletal system. Most commonly, they are seen as secondary osteolyses due to an underlying hereditary, metabolic, or neoplastic condition [1, 2]. From these secondary osteolyses, we differentiate the rare group of idiopathic primary osteolyses. Hardegger et al. classified these in five groups as shown in Table 1 [1].

tab1
Table 1: Classification of idiopathic osteolyses [1].

The Gorham-Stout disease (GSD; synonyms: massive osteolysis, vanishing bone disease) is a rare condition of unknown etiology characterized by semispecific histological findings and a typical radiological and clinical pattern resulting in progressive destruction and resorption of bony structures [3]. Typical histological findings include local osteoclastic hyperactivity and proliferation of small thin-walled arterial or lymphatic vessels (angiomatosis) [37]; radiological features include massive progressive osteolysis that does not respect anatomical borders and spread from the primary focus to adjoining bones [2, 8]. The idiopathic osteolysis is self-limiting after a variable amount of time. There is no specific treatment described yet; symptomatic therapy includes bisphosphonate medication, alpha-2b-interferon, radiation therapy, and surgical procedures as resection and endoprosthetic operation [912].

GSD was defined first by Gorham and Stout in 1955, where the authors suspected the local angiomatosis to result in a local hyperemia resulting in an alteration of the balance of osteoblastic and osteoclastic activity thus leading to massive osteolysis. In many cases, a minor trauma was described as an initiating event for the osteolysis and the authors hypothesized that the proliferation of a local angiomatosis might be triggered by a trauma mechanism [3].

The age of onset is variable; in about 200 reported cases, the majority were younger patients; there were no familiar disposition and no gender specific distribution. Typical unifocal localizations are the skull (18.3%), the pelvis (17.7%), the shoulder girdle (16.0%), the lower (14.9%), and the upper limb (11.4%); less often the spine, ribs, and the sternum were reported to be affected. The overall lethality is about 13.3%; involvement of the thorax typically including a chylothorax result in a poor prognosis with a lethality of 52% [1315]. Diagnostic criteria for the GSD are given in Table 2 and include radiological, histological, and clinical features after ruling out of hereditary, metabolic, neoplastic, infectious, or immunological sources of osteolyses [4, 13, 16].

tab2
Table 2: Criteria for the diagnosis of Gorham-Stout-disease [13].

2. Case Description

A 77-year-old woman who complained accentuated rest pain in both shoulders 8 weeks after minor trauma was admitted to our clinic. Past medical history includes chronic bronchial asthma without steroid medication, hyperthyroidism (radiotherapy 2005), cerebrovascular event without residual neurologic deficiency (1998), and osteoporosis with three osteoporotic lumbar spine fractures (vertebroplasty 2006). Plain X-rays of both shoulders showed osteolyses of both humeral heads, glenoids, and lateral clavicles (Figures 1 and 2(a)). After ruling out of secondary osteolysis, we started the patient on bisphosphonates (alendronate 70 mg per week), calcium, and calcitonin. Early follow-up X-rays showed the termination of progressive osteolyses (Figure 2(b)). After clinical and radiological termination of the progressive disease after three months, the patient was readmitted with poor function and constant rest pain accentuated on the right side. After obtaining CT and MRI scans, we performed reconstruction on the right side by implantation of anatomical shoulder prosthesis (AFFINIS, Mathys Ltd., Switzerland). Intraoperative findings where massive synovitis with significant thickening of the capsule and massive osteolysis of the humeral head (Figure 3) and the glenoid. The rotator cuff was not affected. Pathological and microbiological specimens where taken and sent to a specialized laboratory. The cemented prosthesis was implanted in typical fashion; the glenoid was resurfaced with a polyethylene component. Microbiological specimens came back negative. Pathological findings confirmed macroscopic findings of a detritus-synovitis, massive osteoclastic resorption with stimulated osteoclastic resorption, edema, and fibroses of the bone marrow. These findings were consistent with Gorham-Stout syndrome (Figure 4).

565142.fig.001
Figure 1: 3D reconstructed CT scan showing osteonecrosis of the humeral head, the acromion, lateral clavicle, and the glenoid in Gorham-Stout disease.
fig2
Figure 2: Plain true a.p. X-rays of the right shoulder on first admission in 12/2007 (a), after disease limitation under bisphosphonate therapy in 03/2008 (b), postoperative after implantation of total shoulder prosthesis (c), 1-year followup showing no progression of the osteolyses and no signs of loosening of the prosthesis (d).
565142.fig.003
Figure 3: Macroscopic specimen of the humeral head showing massive osteolysis.
fig4
Figure 4: Histological stains showing altered osteoclastic resorption (acid phosphatase reaction 200x) (a); cortical and cancellous bone with stimulated turnover and marrow fibrosis (Goldner) (b).

On postoperative followup 1 year after surgery, the patient presented with significant improvement in function and pain. The ASES-Score [17] improved from 9.6 to 35, constant score [18] improved from 11% to 34%, and DASH score [14] improved from 81.6 to 59. Plain X-rays showed a correctly implanted prosthesis without signs of loosening; in the glenoid and the lateral clavicle we found minor progression of the osteolysis (Figure 2(d)).

3. Discussion

Our case is the first reported case of bilateral shoulder involvement in GSD. We were able to show the benefit of bisphosphonate therapy in disease control of Gorham Stout as the progression stopped about 3 month after initiation. The effectiveness of this therapy was described in detail before, and we can fully confirm these results [9, 12, 19]. Eventually, the osteolysis stopped in an early stage with limited bone loss. Because the patient complained of limited function and severe pain in both shoulders, we decided to do perform prosthetic replacement of the right glenohumeral joint. The left side showed comparable radiologic findings but the patient did not complain of severe pain and did not require surgical therapy (Figure 5). One year after surgery, the patient reported significant improvement in function and pain relief in the right shoulder represented in almost threefold enhancement in the shoulder scores as shown in results. For the timing of surgery, there is no clear guideline and surgeons are concerned about progression of the osteolysis resulting in loosening of the prosthesis. We performed a relatively early operation and achieved a good result without loosening of the prosthesis [20]. The histopathological specimens showed significant osteoclastic resorption with fibrosis and edema of the bone marrow. Even though the histological findings were not characteristic for the Gorham-Stout disease as they were described in the original paper, we made the diagnosis from the massive osteoclastic resorption without osteoblastic stimulation together with the classical clinical and radiological findings [1, 6, 15]. Histological specimens showed no ulcers; secondary osteonecrosis was ruled out by CT of the abdomen, laboratory tests, chest X-ray, and colonoscopy. Kawasaki et al. reported on an autopsy case of GSD and discussed our question—if angiomatosis is an intrinsic pathohistological feature of GSD—in detail [5]. They did not find any of the vascular changes in cases of GSD consistent with other authors before. They concluded that vascular proliferation might not always be associated with GSD but may be one of the results of disease rather than the cause [5].

565142.fig.005
Figure 5: Plain true a.p. X-rays of the left shoulder in the same patient showing progressive osteolyses of the humeral head, the acromion, the lateral clavicle, and the glenoid in Gorham-Stout disease.

Disclosure

The authors, or any member of their family, have not received any financial remuneration related to the subject of the paper.

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