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Poroid hidradenomas are uncommon tumors originating from eccrine sweat glands, often presenting as dermal nodules predominantly composed of cuticular and poroid cell types. They belong to the broader category of poroid neoplasms, which include hidroacanthoma simplex, dermal duct tumor, and eccrine poroma. Despite their rarity, poroid hidradenomas require accurate diagnosis and appropriate management due to potential overlaps in their histological features with other adnexal tumors, including digital papillary adenocarcinoma. We report a case of a 56-year-old female presenting with a nodular lesion on the palmar aspect of her right middle finger, which was excised under local anesthesia. Histopathological examination confirmed the diagnosis of poroid hidradenoma, highlighting the importance of maintaining a high clinical suspicion and precise histological evaluation in managing such an uncommon dermatological condition of the finger., Competing Interests: Human subjects: Consent was obtained or waived by all participants in this study. Conflicts of interest: In compliance with the ICMJE uniform disclosure form, all authors declare the following: Payment/services info: All authors have declared that no financial support was received from any organization for the submitted work. Financial relationships: All authors have declared that they have no financial relationships at present or within the previous three years with any organizations that might have an interest in the submitted work. Other relationships: All authors have declared that there are no other relationships or activities that could appear to have influenced the submitted work., (Copyright © 2024, Satma et al.)

Objectives: The most common method of performing breast reconstruction after a mastectomy is using tissue expanders. Significant drainage that can lead to seromas and possible infection is a common sequela after mastectomies, and therefore, closed suction drains are routinely placed during the initial surgery (Vardanian et al. Plast Reconstr Surg. 2011;128:403-410). Drains, however, are associated with increased pain and discomfort for the patient and have been attributed to an increased infection rate by some authors (Degnim et al. Ann Surg. 2013;258:240-247; Saratzis et al. Clin Breast Cancer. 2009;9:243-246). We report on our experience using a dual-chamber tissue expander placed in the prepectoral space without acellular dermal matrix or other supportive material, which allows for drainage of periprosthetic fluid and avoids drain placement., Patients and Methods: A retrospective, single-institution review of patients' records was performed for all patients who underwent prepectoral tissue expander placement between January 2018 and June 2019. Patients who had drains placed or who underwent autologous reconstruction in combination with expander placement were excluded. Thirty-nine patients were selected, with a total of 66 expander placements. Demographics including body mass index, comorbidities, history of smoking or steroid use, perioperative chemotherapy and radiation therapy, and intraoperative details and indications for surgery were retrospectively collected. Outcomes were separated into minor and major complications. Major complications were defined as complications that required surgical intervention., Results: There were 51 prepectoral reconstructions with a dual-chamber tissue expander and no further surgical drain and 15 reconstructions using a standard expander with an additional closed suction drain. Overall complications for the no-drain cohort were 13.7% compared with 20% in the drain cohort (P = 0.68). Surgical site infection rate is 7.84% in the no-drain cohort compared with 13.3% in the drain cohort (P = 0.61). Mean numeric postoperative pain score at 6 hours was 3.2 in the no-drain cohort compared with 4.3 in the drain cohort (P = 0.03) and 4.17 compared with 5.6 at 12 hours, respectively (P = 0.04). Mean time to exchange of implant in the no-drain cohort was 152 days versus 126 days in the drain cohort (P = 0.38). Median follow-up times were 157 days for the no-drain cohort and 347 days for the drain cohort., Conclusions: Immediate breast reconstruction using a dual-chamber tissue expander offers a drain-free alternative to the immediate implant-based breast reconstruction. Our infection rate with 7.8% is lower than our own reported rates with subpectoral tissue expander reconstruction using either acellular dermal matrix or poly-4-hydroxybutyrate (17% and 11%). The overall complication rate is similar to historic data associated with breast reconstruction after mastectomy and suggests that dual-chamber expander placement offers a safe alternative possibly decreasing the patient's postoperative pain and discomfort that often is associated with closed suction drains (Saratzis et al. Clin Breast Cancer. 2009;9:243-246).