Case
report
Gorham-Stout-Disease (GSD) of the proximal humerus: A rare
cause of shoulder pain
Kumar
Manoj1,2* , Shahi Prem
1,2**, Adsul Nitin1,2, Acharya Shankar1,2, Chahal
Singh Rupinder1,2, Kalra Lal Kashmiri 1,2, Patel Arth1,2,
Mishra Ratish1,2, Panigrahi Vishnu1,2.
1: Department
of Ortho-Spine Surgery, Sir Ganga Ram Hospital 2: Ganga
Ram Institute of postgraduate medical education and research, New Delhi India * Corresponding author **
Academic Editor Correspondence to: Drmanojkumar25@gmail.com Publication Data: Submitted:
March14,2020 Accepted:
May26,2020 Online:
June 30,2020 This article was subject to full peer-review. This is an open access article distributed under the terms of the
Creative Commons Attribution Non-Commercial License 4.0 (CCBY-NC) allowing
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Abstract |
Gorham-Stout
Disease (GSD) also known as vanishing bone disease is an extremely rare
disorder. This benign self-limiting condition may affect any group of age and
may involve any part of the skeletal system.
Forty cases of GSD of the shoulder have been reported in the
literature with only twenty-three cases involving humerus.
We hereby report the case of a 49-year-old gentleman with Gorham-Stout
Disease of the humerus. Keywords: Gorham-Stout,
Shoulder, management. |
|
Introduction Gorham-Stout-Disease
(GSD) is a rare bone disorder characterized by progressive bone osteolysis usually associated to angiomatous
proliferation of lymphatic vessels. Bone loss can be localized or spread to
soft tissue and adjacent bones. This
benign condition may involve any part of the skeletal system. A central
location’s predilection has been reported. Its topography may include ribs,
spine, pelvis, skull, clavicle, and jaw. The etiopathogenesis
is still unclear. GSD may be related to uncontrolled endothelial
proliferation of vascular and lymphatic capillaries within the bone [1].The
management of GSD should be case based. Many factors could interfere with the
decision making. The extended functional loss may indicate surgery in
appropriate candidates. Observation A
49-year-old gentleman without significant co-morbidities presented with the
complaint of mild, gradual onset, non-radiating left shoulder pain with
progressive restriction of shoulder movements for 8 months following a fall
from bicycle which did not improve after symptomatic treatment. Local
examination revealed major instability of left shoulder joint with loss of active
movements and intact distal neurovascular status. Plain X-rays of left
shoulder revealed severe osteolysis of the proximal
third of the humerus and scapula (Figure 1). The MR
scan showed low intensity signals on T1 and hyperintensity
on T2 signifying bone loss and vascular proliferation (figure 2). Ultrasound
guided biopsy of the lesion revealed angiomatous
proliferation. The
diagnosis of GSD was made. Shoulder replacement was indicated due to severe osteolysis, shoulder instability and movements restriction.
However, the patient preferred a conservative management. |
Figure
1: Plain roentgenogram (Antero-posterior view) of left
shoulder showing severe osteolysis of proximal humerus with involvement of the scapula.
Figure 2: Left shoulder magnetic
resonance imaging features
a: T2
weighted- Coronal of left shoulder showing spongious-like
humerus aspect
with almost complete head necrosis and diffuse hyperintensity
in favor of vascular
proliferation
b,c:T2
weighted- Axial showing extended necrotic process to shoulder’s soft tissues
Discussion
Gorham-Stout
Disease (GSD) of the shoulder is an extremely rare disease. Approximately 300
cases of GSD are reported in literature. A total of 40 cases of Shoulder GSD
and only 23 cases of Humerus GSD have been reported
in the literature [2,3]. Garbers
et al reported a rare case of Gorham-Stout disease of both shoulders [4].
Its etiology is
still unclear. The basic pathogenesis includes inappropriate activation of
osteoclasts via stimulation of interleukin-6 and the receptor activator of
nuclear factor-kappa B ligand (RANKL) that leads to spontaneous progressive osteolysis. The destructed osseous matrix is replaced later by fibrous tissue [5].The
diagnosis of Gorham’s disease is based on clinical and radiologic features of
bone loss with histological evidence of angiomatous
proliferation [6]. CT scan and MR could contribute to the diagnosis. The
lesion demonstrates T1 hypo-intensity and T2 hyperintensity
on MRI. The vascular component of the lesion can be seen in fat suppressed T1
weighted post-contrast sequences. However, scintigraphy
and positron emission tomography (PET) imaging with Fluorine-18-sodium (18F-NaF
PET-CT) have higher diagnostic
sensitivity and could be efficient in GSD diagnosis and treatment follow up
[7]. Osteomyelitis, Paget’s disease, Langerhans cell histiocytosis
and hereditary multicentric osteolysis
are the differentials for GSD. It is imperative to rule out malignancies before
GSD diagnosis. The bone biopsy is always indicated. Shoulder GSD is a benign
disease that significantly alters the patient’s quality of life. The management
of this entity is not standardized. The treatment is case based and
nonconsensual. Aside from the pain relievers, several medications were proposed
for GSD. This includes anti-resorptive drugs like
bisphosphonates, angiogenesis inhibitors, low molecular weight heparin and
steroids for the patients with mild to moderate symptoms. Some other molecules such as
calcium , calcitonin, and vitamin D could be included in the treatment.
Recently some inhibitors of the mammalian target of rapamycin
(mTOR) were recommended in the GSD treatment.
The results of medical therapies are variable [8].
Radiotherapy
and surgery are considered for patients with severe symptoms. Recurrence rate
is very low with resection and endo-prosthetic
reconstruction compared to reconstruction with bone graft. Biological
reconstruction combined with medications is not only effective in controlling
the disease but also to halting its progression and recurrence. The prognosis
depends on the lesion’s severity and the location of the affected area. Mild
form may remain stable for many years, while severe cases involving craniofacial
and thoracic components can be associated with increased mortality [9].
Conflict
of Interest: None
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