Nidhi Handoo

Heterotopic hair in the oral cavity is a rare condition, with possible etiologies including prior skin graft reconstruction, oral and maxillofacial trauma, or, in some clinical context, no identifiable cause. We report a case of a patient with trichotillomania who presented with a persistent sinus track opening between teeth #9 and #10 and a well-defined periradicular lesion in the area. Microscopically, it revealed a partially lined cyst-like entity containing terminal hairs, associated with a foreign body-type giant cell reaction. The patient admitted to a habit of repeatedly pulling and plucking her hair, placing it in her mouth, and occasionally pressing it against the area of concern. To our knowledge, this is the first reported case of an intraosseous hair-induced cyst-like entity with foreign body reaction in the anterior maxilla associated with trichotillomania.

Intraosseous plexiform schwannoma of the jaw is exceedingly rare, with only one previously reported case in the maxilla. We present a case of a 27-year-old male who presented with a painless maxillary swelling. Radiographic findings reveal an unilocular radiolucent lesion mimicking an odontogenic tumor or cyst. Histopathologic examination showed a multinodular spindle cell neoplasm showing Antoni A and B patterns and diffuse S100 positivity, confirming the diagnosis of intraosseous plexiform schwannoma. Although rare, this entity can mimic an odontogenic lesion on imaging. Awareness of this possibility is crucial to expand the differential diagnosis of radiolucencies of the jaw, and this case underscores the importance of histopathologic assessment for accurate diagnosis and appropriate clinical management.