A Rare Occurrence of Enchondroma in Neck of Femur in an Adult Female: A Case Report.

Enchondroma is a solitary, benign, intramedullary cartilaginous tumour occurring most commonly in small bones of hands and feet. Distal femur and proximal humerus are other less common locations. Enchondroma consists of 3-10% of all bone tumours, while they constitute 12-24% of benign bone tumours. They originate from the growth plate cartilage which later on proliferates to form enchondroma. Radiographs reveal a localized, radiolucent lytic bone defect usually with punctuate calcifications. Lesions are central or eccentric and metaphyseal involvement most commonly for long bones. MRI and histopathological examination can be used to confirm the diagnosis. Asymptomatic cases can be managed conservatively with serial radiological follow ups. Cases with symptoms are managed operatively. Recurrence rate is very low (<5%), it suggests malignancy. We here present a case of a 30-year-old female patient who presented with a history of pain in right hip since 7 months. Radiological examination showed the lesion to be enchondroma. The patient was managed by curettage with autogenous iliac bone graft & prophylactic 6.5 mm cannulated screws fixation. Histopathology confirmed the lesion to be enchondroma. At the latest follow up after 6 months, the patient was symptom free and there was no evidence of any recurrence. The current case report of enchondroma located in the neck of femur signifies the importance of early diagnosis, timely intervention and treatment. Also, this case report represents one of the very rare cases reported in literature.