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Use of chemical ablation with trichloroacetic acid to treat eyelid apocrine hidrocystomas in a cat

Shih-Hung Yang DVM1, Chen-Hsuan Liu DVM, PhD2, Chia-Da Hsu DVM3, Lih-Seng Yeh DVM, PhD4, and Chung-Tien Lin DVM, PhD5
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  • 1 Graduate Institute of Veterinary Medicine, College of Bioresources and Agriculture, National Taiwan University, Taipei, Taiwan.
  • | 2 Graduate Institute of Veterinary Medicine, College of Bioresources and Agriculture, National Taiwan University, Taipei, Taiwan.
  • | 3 Graduate Institute of Veterinary Medicine, College of Bioresources and Agriculture, National Taiwan University, Taipei, Taiwan.
  • | 4 Graduate Institute of Veterinary Medicine, College of Bioresources and Agriculture, National Taiwan University, Taipei, Taiwan.
  • | 5 Graduate Institute of Veterinary Medicine, College of Bioresources and Agriculture, National Taiwan University, Taipei, Taiwan.

Abstract

Case Description—A 7-year-old Persian cat was evaluated for recurrence of multiple cystic periocular masses. A number of cyst-like lesions had been resected from the left eyelids 18 months earlier, with lesions recurring within 6 months after surgery. The cat had blepharospasm and signs of discomfort following rupture of the largest cyst the day prior to examination. Previous histologic examination of the cysts had revealed apocrine hidrocystomas.

Clinical Findings—Multiple pigmented nodules were seen around the skin of the upper and lower left eyelids. The nodules were brownish to black, round, soft, and fluid-filled. Signs of pain were not evident during palpation of the nodules.

Treatment and Outcome—The largest cyst on the upper eyelid was removed by means of a V-shaped full-thickness excision. Histologic and immunohistochemical examination of the excised tissue confirmed the diagnosis of apocrine hidrocystoma. The remaining periocular cysts were surgically debrided and then treated topically with 20% trichloroacetic acid. All lesions healed rapidly without any signs of discomfort. During a recheck examination 12 months later, the upper and lower left eyelids appeared morphologically normal, and there was no evidence of recurrence.

Clinical Relevance—Findings suggested that chemical ablation with trichloroacetic acid may be a useful treatment for apocrine hidrocystomas in cats.

Abstract

Case Description—A 7-year-old Persian cat was evaluated for recurrence of multiple cystic periocular masses. A number of cyst-like lesions had been resected from the left eyelids 18 months earlier, with lesions recurring within 6 months after surgery. The cat had blepharospasm and signs of discomfort following rupture of the largest cyst the day prior to examination. Previous histologic examination of the cysts had revealed apocrine hidrocystomas.

Clinical Findings—Multiple pigmented nodules were seen around the skin of the upper and lower left eyelids. The nodules were brownish to black, round, soft, and fluid-filled. Signs of pain were not evident during palpation of the nodules.

Treatment and Outcome—The largest cyst on the upper eyelid was removed by means of a V-shaped full-thickness excision. Histologic and immunohistochemical examination of the excised tissue confirmed the diagnosis of apocrine hidrocystoma. The remaining periocular cysts were surgically debrided and then treated topically with 20% trichloroacetic acid. All lesions healed rapidly without any signs of discomfort. During a recheck examination 12 months later, the upper and lower left eyelids appeared morphologically normal, and there was no evidence of recurrence.

Clinical Relevance—Findings suggested that chemical ablation with trichloroacetic acid may be a useful treatment for apocrine hidrocystomas in cats.

Contributor Notes

The first two authors contributed equally to the report.

Address correspondence to Dr. Lin.