Background: The neuromuscular hamartoma (syn. neuromuscular choristoma, benign triton tumour) is a rare developmental lesion composed of mature elements of striated muscle and nerve. Most earlier reports either do not list adipose tissue as a component or do not comment on its presence or absence in the lesion. To the best of our knowledge, till date, only thirty-nine cases of neuromuscular hamartoma have been reported in English literature. Some of these have involved large nerves; others report cutaneous lesions or cranial nerve involvement. A majority have been described in infants and young children and nearly all patients had associated neurological dysfunction.
Case Report: We present a rare case of a neuromuscular hamartoma with an additional adipose tissue component arising from a branch of the sciatic nerve, in a thirty-four year old male patient with no neurological deficit.
Conclusion: Although neuromuscular hamartomas in adults are very rare, they should be considered in the differential diagnosis of soft tissue tumours of the lower leg, irrespective of the presence or absence of neurological symptoms.
Neuromuscular hamartoma, benign Triton tumour, peripheral nerve tumour