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Giant spinal intradural metastatic adenocarcinoma of unknown primary: A rare case report

 Department of Neurosurgery, Institute of Neurosurgery, Madras Medical College, Chennai, Tamil Nadu, India

Correspondence Address:
Natarajan Meenakshisundaram,
Room No. 16, PG Men's Hostel, Superspeciality block, Chennai - 600 003, Tamil Nadu
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ajns.AJNS_65_18

Giant intradural metastases of nonneurogenic origin involving multiple segments represent an extremely rare manifestation of an unknown primary. The respective literature is very scarce. We present a 45-year-old female with complaints of low back pain for 4 years, involuntary urination for 2 years, and difficulty in using both lower limbs for 1 month. Examination revealed paraparesis with hypotonia. Imaging of lumbosacral spine revealed that expansile lytic destruction of vertebral bodies and posterior elements was noted from D8 to S2 vertebra and a large-sized patchy enhancing heterogeneous intradural extramedullary lesion was noted in D8–S2 level. Decompressive laminectomy from D11 to L4 vertebra and subtotal excision of the lesion were done. There was a marked improvement in the lower limb weakness and low back pain postoperatively. Histopathology revealed metastatic adenocarcinoma. Immunohistochemistry showed epithelial membrane antigen positivity. Accordingly, the aim of the surgery is strictly palliative. The majority of patients benefit with respect to neurological deficit/pain independent of the extent of resection. Thus, decompressive surgery is recommended to increase the quality of life. The occurrence of intradural spinal metastasis is rare. Only few cases of intra dural spinal metastasis involving multiple cord segments and osteolytic bony erosions have been documented. Hence this case is being presented here for its rarity and its uniqueness.

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