Infected Epidermoid Cyst Including Multiple Nails at the Amputated Thumb Stump: A Case Report

Fingertip amputation is a common injury among trauma occurring in the upper extremity. After amputation of the fingertip, there are several treatment options according to the degree of damage. Also, the skin flap is sometimes performed when skin defects are accompanied. Among the complications associated with fingertip injury, cyst formation at the amputation stump is rare but some cases have been reported based on the pathologic findings. There was a case of an infected epidermal inclusion cyst containing multiple nail plates at the amputation stump of the thumb, so we would like to report it with a review of the literature.

Tonsillar Actinomycosis with presence of Epidermal inclusion cyst: Report of a rare entity

Epidermal inclusion cysts (EIC) are benign lesions that can be encountered throughout the body, but with a low incidence in the head and neck region. (1.6 to 7%) The various locations in this region where the cyst can arise are sublingual, submental, submandibular and buccal mucosa. EIC present in the tonsils are extremely rare and reported less than 0.01% in published English literature. We report a rare and incidental finding of epidermal inclusion cyst with actinomycetes in tonsil in a 57 year old male who presented with sore throat and difficulty in swallowing.

EPIDERMAL INCLUSION CYST OF THE PERIANAL REGION: REPORT OF A RARE CASE

Epidermal cysts are congenital lesions that originate from embryonal tissue remnants. It requires histopathology for its diagnosis. In this case, we report a young male with no comorbidities presenting with perianal swelling. He was evaluated and taken up for surgery. Post operative period was uneventful and he was discharged on 2nd post operative day. He is doing well at 4 months of follow up.

Interdigitating Dendritic Cell Sarcoma in Upper Arm Misdiagnosed as Ruptured Epidermal Inclusion Cyst

Interdigitating dendritic cell sarcoma (IDCS) is an extremely rare neoplasm that usually arises in lymph nodes, but also can exist in extranodal sites. This report is about a case study of IDCS in the upper arm skin with axillary lymph node metastasis. A 66-year old woman had a slowly growing mass with tenderness sensation on her right upper arm that was being injected triamcinolone acetonide at local clinic. The presumptive diagnosis was a ruptured epidermal inclusion cyst, and empiric antibiotic therapy was done; however, she had poor respondence to antibiotic therapy. Therefore, magnetic resonance imaging, incisional biopsy, positron emission tomography-computed tomography, and bone scan were performed and a malignant tumor was diagnosed. She received surgical resection and lymph node dissection of the right axilla. No adjuvant chemotherapy was done. Although extremely rare, this case suggests that extranodal IDCS should be considered in differential diagnosis of untreated atypical skin mass and early biopsy should be performed.

Giant epidermal inclusion cyst with infection arising within the breast parenchyma: a case report

Epidermal inclusion cysts (EICs) of the breast develop in the deep breast parenchyma, and they are very rare. Only about 10 cases have been reported in the English-language literature to date. In this report, we present a rare case of a giant EIC with infection arising within the deep breast parenchyma. Unlike a typical EIC of the breast, the EIC in the present case was a cystic and solid lesion containing a large amount of liquid within the cyst and popcorn-like calcification in the wall. In this report, we describe the contrast-enhanced spectral mammography (CESM), ultrasonography, and computed tomography findings and provide a reference for the diagnosis of EICs. To the best of our knowledge, this is the first report of the CESM findings of an EIC. Our case illustrates that CESM has excellent performance similar to that of magnetic resonance imaging and is much more effective than conventional digital mammography. Additionally, our case indicates that precise correlation of CESM with ultrasonography findings contributes to the diagnosis of EICs. This rare case with multiple imaging findings will increase the awareness of EICs in the breast parenchyma.