A 29-year-old female without trauma and past history initially visited our hospital in 2018. She complained swelling of perineum and right leg for 5 years, accompanied by back pain for 3 years. On physical check, she had moderate back tenderness, visual analogue scale (VAS) was 5 points. No sign of neurological impairment was found. Laboratory studies (routine blood tests, blood sedimentation, blood lipids, liver function, kidney function, parathyroid function, thyroid function, vitamin D, blood tumor markers, tuberculin test, brucella agglutination test, calcium, phosphorus, magnesium, urine routine, 24 h urine calcium, 24 h urine phosphorus, blood immunoelectrophoresis, and urine immunoelectrophoresis) were within normal range, no evidence of an inflammatory, neoplasm or infectious disease was found. Magnetic resonance imaging (MRI) of pelvic and right leg revealed multiple high-intensity signal among abdomen pelvic cavity, bilateral perineum, pubis, illium and left femoral head on T2 weighted imaging, which were considered to be diffuse lymphangioma and lymphangiectasis. The X-ray and computed tomography (CT) of spine showed multiple osteolysis of multiple vertebrae and kyphoscoliotic deformity. The lung CT was normal [Figure 1].
On the basis of acquired information, we initially diagnose this patient to be primary GSD. On account of the absence of major deformity and spinal imbalance, we chose to perform percutaneous pedicle screw fixation on this patient. Her back pain ameliorated after surgery, VAS was 3 points. Postoperative X-ray of lumbar spine showed the kyphoscoliosis deformity was corrected [Figure 2]. 5mg of diphosphonate was intravenously applied.
Two months later, the patient visited our hospital again for aggravated swelling of leg and chyluria, which suggested continuous compression of lymphocinesia. The patient underwent the second time surgery to resect the lesions derived from and retroperitoneum (bilateral external iliac and renal pedicles). The corresponding author participated in this surgery for providing anterior support by intervertebral fusion. The intraosseous lesion of L3 vertebra was curetted, L3/4 intervertebral disc was removed. Morselized ilium bone was grafted into the intraosseous cavity, L3/4 intervertebral space, and anterior L2, 3, 4 vertebra on the concave side of scoliosis after decortication. The histopathological and immunohistochemical results confirmed that lymphatic-derived endothelial cells were positive for D2-40 staining, which supported the clinical diagnose of GSD [Figure 3].
Twenty five months after the first spinal surgery (23 months after the second surgery), the patient visited our department again with severe back pain for 1 month, which was irresponsive to painkillers, the VAS was 7 points. She denied any kind of trauma. The X-ray of lumbar spine revealed failure of fixation and aggravated kyphoscoliotic deformity. The CT of lumbar spine revealed interbody fusion of L3/4 and bony union of L3/4, L4/5 facet joints [Figure 4]. Larger range of high intensity signals among subcutaneous soft tissues and periosteum musculature on coronal, sagittal, and cross-sectional view of T2 weighted image can be observed when comparing that from previous image [Figure 5].
We planed to correct the kyphoscoliotic deformity by retrieving the previous hardwares and fixing the lumbar spine from L1 to L5 through posterior approach. However, after cutting open the skin, we found diffusive hemangiectasis and hemangioma among subcutaneous tissues and paraspinal muscles, which led to massive blood loss during the exposure process. After retrieving the screws of L2 vertebra, the volume of blood loss was up to 1500 cc. It seemed like we were performing the surgery in a pool of blood. In consideration of patient’s safety, we left the L4 screws in-situ, and performed a unilateral fixation on the concave side of scoliosis. Autograft which harvest from ilium was performed on denuded facet joints in an “on-lay” fashion.
Her back pain alleviated after surgery, the VAS was 3 points. She was asked to wear rigid brace during off-bed activities for 3 months. During the 27-month follow-up, she reported continuous relief of back pain, leg swelling and dyspnea. Two years after the last surgery, the kyphoscoliosis maintain steady on radiographic evaluation, no new-onset osteolysis was found [Figure 6].