PDF(Pubmed)
Abstract：
BACKGROUND: Trichilemmal cysts (TCs) are common benign cysts that form from the hair follicles in the skin. Proliferating trichilemmal cysts (PTCs) are rare types of TCs characterized by rapid cellular proliferation. Malignant transformation of PTC (MPTC) is a rare adnexal tumor that account for <0.1% of all skin cancers. TCs and PTCs are benign tumors; however, MPTCs grow rapidly and are prone to metastasis.
METHODS: A 77-year-old man was referred to our hospital with a solitary pinkish mass on his left elbow. Trichilemmal carcinoma arising from a PTC was confirmed through excisional biopsy, and wide excision was performed. One month postoperatively, a cystic mass was observed and was suspected to have local recurrence; however, bursitis was confirmed after excisional biopsy. After 1 year of follow-up, the patient maintained an improvement without recurrence or any other surgical complications.
CONCLUSIONS: In addition to being a very rare disease, MTPC occurred in the elbow of a man who does not fit the general etiology; therefore, it is considered an interesting case, and we report this case for academic contribution.
METHODS: A 77-year-old man was referred to our hospital with a solitary pinkish mass on his left elbow. Trichilemmal carcinoma arising from a PTC was confirmed through excisional biopsy, and wide excision was performed. One month postoperatively, a cystic mass was observed and was suspected to have local recurrence; however, bursitis was confirmed after excisional biopsy. After 1 year of follow-up, the patient maintained an improvement without recurrence or any other surgical complications.
CONCLUSIONS: In addition to being a very rare disease, MTPC occurred in the elbow of a man who does not fit the general etiology; therefore, it is considered an interesting case, and we report this case for academic contribution.
摘要：
背景：毛囊囊肿（TC）是由皮肤中的毛囊形成的常见良性囊肿。增殖性毛囊囊肿(PTCs)是以快速细胞增殖为特征的罕见类型的TC。PTC恶性转化（MPTC）是一种罕见的附件肿瘤，占所有皮肤癌的<0.1％。TC和PTC是良性肿瘤；然而，MPTC生长迅速并且易于转移。
方法：一名77岁的男子被转诊到我们医院，他的左肘上有一个孤立的粉红色肿块。通过切除活检证实了由PTC引起的毛膜癌，并进行了广泛切除。术后一个月,观察到囊性肿块，怀疑有局部复发；然而，切除活检后证实了滑囊炎。随访1年后,患者持续改善,无复发或任何其他手术并发症.
结论：除了是一种非常罕见的疾病，MTPC发生在不符合一般病因的男性的肘部；因此，这被认为是一个有趣的案例，我们报告这个案例的学术贡献。
方法：一名77岁的男子被转诊到我们医院，他的左肘上有一个孤立的粉红色肿块。通过切除活检证实了由PTC引起的毛膜癌，并进行了广泛切除。术后一个月,观察到囊性肿块，怀疑有局部复发；然而，切除活检后证实了滑囊炎。随访1年后,患者持续改善,无复发或任何其他手术并发症.
结论：除了是一种非常罕见的疾病，MTPC发生在不符合一般病因的男性的肘部；因此，这被认为是一个有趣的案例，我们报告这个案例的学术贡献。
