|Year : 2018 | Volume
| Issue : 4 | Page : 186-189
Enterogenous cyst from craniovertebral junction to D2 – Rare presentation
Kodeeswaran Marappan, Saravanan Ramamurthy, J Sharmila Beevi
Department of Neurosurgery, Government Kilpauk Medical College, Chennai, Tamil Nadu, India
|Date of Web Publication||5-Dec-2018|
#3, Nanda Nikethan, 10, Valliammal Street, Kilpauk, Chennai - 600 010, Tamil Nadu
Source of Support: None, Conflict of Interest: None
The neurenteric cyst is a rare lesion of the spinal axis. It is composed of heterotopic endodermal tissue. During the 3rd week of human embryogenesis, the neurenteric canal unites the yolk sac and the amniotic cavity as it traverses the primitive notochordal plate. Persistence of the normally transient neurenteric canal prevents the appropriate separation of endoderm and notochord. This anomalous union manifested as congenital abnormalities of the spine. It is defined by the presence of mucus-secreting epithelium reminiscent of the gastrointestinal tract. It is presented with pain and myelopathic symptoms. Septic or chemical meningitis can also occur. A variety of approaches are described in the treatment of neuroenteric cysts each with a goal of total surgical resection.
Keywords: Craniovertebral junction, neurenteric cysts, rare spinal cord tumor, spinal cord
|How to cite this article:|
Marappan K, Ramamurthy S, Beevi J S. Enterogenous cyst from craniovertebral junction to D2 – Rare presentation. Apollo Med 2018;15:186-9
| Introduction|| |
Enterogenous cyst is otherwise known as Neuroenteric cysts. It is presented as rare intra-spinal masses and less frequently intra-cranial lesions. It probably arise during notochordal development and transitory existence of the neuroenteric canal, where it persists to exist. Neurenteric cystic lesions were first described by Kubie and Fulton in 1928 as teratomatous cysts and later by Puusepp in 1934 as intestinomas. Holcomb and Matson coined the term neurenteric cyst in 1954.,, Neurenteric cysts account for 0.7-1.3% of all spinal cord tumors. Approximately 90% of neuroenteric cysts are located in the intradural or extramedullary compartment and 10% are divided between an intradural and intramedullary or extradural location. Incidence is more than 80% intra spinal and 10-15% intra cranial.,,,,,,,, It can present any age- mostly under 40 yrs of age. Peak incidence is in first decade and slight male preponderance. Common sites are thoracic spine. Most common site is anterior to spinal cord.,, It is situated Intra dural and extramedullary. Intramedullary type is very rare.
| Case Report|| |
A 39-year-old female presented with weakness and numbness in all the four limbs of 1-month duration. There is no history of trauma. She is not a known case of diabetic, hypertension, or pulmonary tuberculosis. General examination was normal. On neurological examination, head, face, and cranial nerves are normal. There are no cerebellar signs. On spine and motor system examination, normal tone in both upper limbs and hypertonia in lower limbs. Upper limb power is 4/5 and lower limb power is 3/5. Deep tendon reflex (DTR) in the upper limb-left biceps jerk depressed, and all other DTRs are exaggerated. Bilateral plantar is extensor. Romberg's test is positive. Sensation is reduced below D4. All basic investigations are normal including serum electrolytes. Magnetic resonance imaging showed severe cord compression both anteriorly and posteriorly with thinned out cord. Lesion is hypointense in both T1 weighted and T2 weighted [Figure 1], [Figure 2], [Figure 3], [Figure 4]. Preoperative differential diagnoses are en plaque meningioma, en plaque tuberculoma, and ossified posterior longitudinal ligament with thickened ligamentum flavum. Procedure done was posterior cervical decompression from craniovertebral (CV) junction to D3 and subtotal excision of space occupying lesion.
|Figure 1: Magnetic resonance imaging showed severe cord compression both anteriorly and posteriorly with thinned out cord|
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|Figure 2: Magnetic resonance imaging showed severe cord compression both anteriorly and posteriorly with thinned out cord|
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|Figure 3: Magnetic resonance imaging axial cut, lesion is hypointense in both T1 weighted and T2 weighted|
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|Figure 4: Magnetic resonance imaging contrast showed severe cord compression both anteriorly and posteriorly with thinned out cord|
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| Discussion|| |
Intraoperatively, the lesion was thick, firm, and avascular and was situated intradurally about 14 cm in length. It was encircling the cord [Figure 5], [Figure 6], [Figure 7], [Figure 8]. The dura was firmly adherent to the lesion and was difficult to separate. Immediate postoperative period patient showed improvement of power to 4/5. She became drowsy on the 5th postoperative day (POD). Her potassium level was 2.7 mg/dl. She showed improvement after potassium deficiency was corrected. She became quadriplegic on the 10th POD. Her serum electrolytes showed normal values. Investigations are done for the postoperative deterioration. Serum electrolytes are normal. Computed tomography (CT) brain showed posterior interhemispheric bleed and thin bifrontal subdural hygroma. CT cervical spine showed postoperative changes. We lost the patient on the 13th POD. The exact cause of death is not known as routine autopsy is not done at our institute. Histopathological findings showed ciliated columnar lined cystic spaces with few papillae, containing goblet cells, and subepithelial clusters of lymphoid follicles – typical picture of enterogenous cyst [Figure 9], [Figure 10], [Figure 11], [Figure 12]. Surprisingly, we were not able to visualize any cystic space intraoperatively and macroscopically.
| Conclusion|| |
Enterogenous cyst is common in the lower cervical and the upper dorsal region. It is usually situated in anterior to the cord and mostly cystic. Compression at high cervical region producing quadriparesis is rare. Our patient had an extensive lesion from CV junction to D2 encircling the cord and fibrous in nature. Cyst was noticed only microscopically. MRI and CT scan are essential diagnostic tools for the delineation of cyst form and overlying osseous architecture., MRI shows lobulated intra dural extramedullary mass, usually slightly hyper intense to CSF. Associated vertebral anomalies are seen in 43%. Gross appearance is well delineated, thin-walled fluid –containing masses. Differential diagnosis are Arachnoid cyst, Epidermoid cyst, Inflammatory cyst.
Declaration of patient consent
The authors certify that they have obtained all appropriate patient consent forms. In the form, the patient has given her consent for her images and other clinical information to be reported in the journal. The patient understands that name and initial will not be published and due efforts will be made to conceal identity, but anonymity cannot be guaranteed.
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Conflicts of interest
There are no conflicts of interest.
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[Figure 1], [Figure 2], [Figure 3], [Figure 4], [Figure 5], [Figure 6], [Figure 7], [Figure 8], [Figure 9], [Figure 10], [Figure 11], [Figure 12]