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Schwannomas predominantly are non-cancerous tumors that develop from the protective covering of nerves. These growths can occur throughout the body and may lead to issues such as pressure symptoms and aesthetic or functional anomalies, depending on their specific location. A less common type, known as ancient schwannomas, grows slowly and is marked by cystic and necrotic deterioration within the tumor tissue. It is exceptionally rare for these tumors to appear in the spinal canal, especially within the sacral region. Often, these tumors are discovered by accident or through the manifestation of pain and neurological symptoms like lower back discomfort, loss of sensation, or tingling. In the case discussed here, the patient, a farmer by profession, experienced no notable symptoms apart from a sensation of abdominal fullness after eating, persisting for a month. Upon seeking medical advice, an abdominal ultrasound was conducted, revealing a mass. Further investigation through CT identified the mass as originating from the second sacral vertebra, and a histological evaluation confirmed the diagnosis of ancient schwannoma. Schwannomas, Introduction: or neurilemmomas, are non-malignant growths originating from the embryonic neural crest cells that form the nerve sheath 1. Typically manifesting in individuals during their forties and fifties, there's a slight inclination towards female patients 2. These growths can appear anywhere within the neural system but are predominantly found on the head, the inner sides of limbs, and the torso. While schwannomas are somewhat common in the cervical and lumbar regions of the spine, their occurrence in the sacral spine is notably rare 3. The symptoms vary based on the tumor's location, with back discomfort and radicular signs being the most common 4.Ancient schwannomas differ from their more common counterparts by exhibiting several degenerative changes, such as calcification, cyst development, hemorrhage, and hyalinization around blood vessels 5. These tumors do not possess unique clinical or imaging characteristics, making histological analysis crucial for accurate diagnosis 6. This case report highlights a spinal mass that posed diagnostic challenges and was ultimately identified as an ancient schwannoma through surgical removal and subsequent histopathological evaluation 7.
Sharma et al. (Wed,) studied this question.