Intraosseous Epidermal Inclusion Cyst of the Great Toe: Masquerading as Bone Tumour.

A 54-year-old male, a motor mechanic by occupation, presented to the orthopaedics clinic with two months history of painful enlargement of the left great toe [Table/Fig-1]. The swelling was slowly increasing in size. His past history revealed a road accident four years back, which caused injury to the same toe, however there was no fracture at that time. It got healed without any other consequences. After six months of this accident, an iron rod fell on the same toe which caused avulsion of his nail, for which he took treatment from a local doctor and a bandage was applied. The nail had regrown normally and he did not have any symptoms, until two months back, when he started having pain and swelling on the same toe. There was no significant medical history. On physical examination, left toe was enlarged as compared to the right toe. Overlying skin and nail were discoloured. No other swelling or lymphadenopathy was noted. Blood investigations were within normal limits. X-Ray showed a radiolucent lesion with lytic areas in distal phalanx of the left great toe [Table/Fig-2]. Clinically, a giant cell tumour of bone was suspected and Fine Needle Aspiration Cytology (FNAC) was advised to confirm the diagnosis. FNAC was performed with a 23 gauge needle attached with a 10 ml syringe which yielded 0.1 ml white pultaceous material. Smears were prepared and stained with Giemsa stain. Microscopic examination revealed numerous anucleated squames and few nucleated squamous cells in the background of granular debris [Table/Fig-3]. A diagnosis of intraosseous Epidermal Inclusion Cyst (EIC) was rendered on cytology.

• Publication year

  2017

• Venue

  Journal of clinical and diagnostic research : JCDR

• Publication date

  2017-06-01

• Fields of study

  Medicine

• Identifiers
  DOI 10.7860/JCDR/2017/29249.10100PMID 28764186PMCID PMC5535379
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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