LETTERS

Foreign Body Type Nasal Pseudocyst After Augmentation Rhinoplasty: Histopathologically Mucin-Containing Pseudocyst To the Editor: An 18-year-old woman presented with a one week history of a rapidly growing asymptomatic mass on the left nasal root. One year earlier, she underwent a rhinoplasty using a silicone implant. Six months after the procedure a heavy bag fell on her nose. She had no relevant past medical or drug-use history. Physical examination revealed a hyperkeratotic, firm, and protruding nodule mimicking pyogenic granuloma

TO THE

EDITOR

(Fig. 1A). Antibiotics were used with no effect. A presurgical diagnosis of pyogenic granuloma associated with trauma was made, and excisional biopsy was performed. During the excision, translucent gelatinous material oozed out from the lesion. One week after the excision, the lesion recurred. Soft tissue ultrasonography showed a 0.4 · 0.67 cm hypoechoic lesion between the silicone implant and the overlying skin (Fig. 1B). During an open surgical approach, the mass was removed and then the silicone implant was released from the nasal bone. Intraoperatively, it was found that the silicone implant was broken into 3 pieces (Fig. 1C). Revision rhinoplasty and tip plasty with ear cartilage were also performed. Histological examination of the removed mass revealed a dermal mucous retention cystic area, devoid of any true epithelial lining (Fig. 2A). The mucin-containing dermal space was surrounded by granulation tissue. Muciphages were identified

(Fig. 2B). The stromal mucin stained positively with alcian blue (Fig. 2C), whereas the gram stains and periodic acid–Schiff (PAS) stains were negative. Follow-up at 3 years after the surgery revealed no signs of recurrence. Recently, a 42-year-old man with a nasal root mass presented to our clinic. Fifteen years earlier, he had undergone augmentation rhinoplasty with a silicone implant. Five months earlier a nasal mass suddenly developed after he suffered from a blunt trauma to his face. Physical examination showed a 1.0 · 0.8 cm, erythematous protruding cystic mass on the left nasal root (Fig. 1D). Antibiotics were used with no effect. A presurgical diagnosis of foreign body type nasal pseudocyst associated with augmentation rhinoplasty was made, and the cyst and silicone implant were removed. Grossly, the removed silicone implant had a broken edge (Fig. 1E). The cystic mass was composed of gelatinous

FIGURE 1. A, A hyperkeratotic protruding nodule on the left side of the nasal root. B, Ultrasonography showed a hypoechoic lesion between the silicone and the overlying skin. C, The silicone implant was broken into 3 pieces. D, An erythematous cystic nodule on the left side of the nasal root. E, The removed silicone implant had broken edge.

Supported by an Inha University Research Grant (52562-01). The authors declare no conflicts of interest.

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Am J Dermatopathol  Volume 0, Number 0, Month 2017

FIGURE 2. A, A foreign body type cyst. The mucin-containing dermal space was surrounded by granulation tissue and inflammatory cells (hematoxylin and eosin, ·12.5). B, The stromal mucin stained positively with alcian blue (alcian blue, ·12.5). C, Inflammatory cells composed of neutrophils, lymphocytes, and foreign body type giant cells in the cystic lesion. (hematoxylin and eosin, ·200). D, Muciphages were identified (alcian blue, ·400).

material filled space with chronic inflammatory cells and foreign body type multinucleated cells. The cystic mass also positively stained with alcian blue. Nasal dorsal cyst formation is a very rare complication of rhinoplasty. Since the first description in 1958 by McGregor et al,1 only 26 cases have been reported in the literature.2 Some theories have been proposed regarding their development: herniation of nasal mucosal tissue through

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the fractured site and nasal mucosa growth through osteotomy lines.2 The histopathological findings have been of a mucous retention cyst lined with respiratory-type epithelium; however, such a lining was not present in our case. Rarely, a foreign body type pseudocyst after rhinoplasty has been reported; one case was similar to our patients, and the other case was caused by petroleum-based ointment.3,4 Here, we describe 2 cases of postrhinoplasty

foreign body type pseudocysts containing inflammatory cells and gelatinous material without epithelial lining. It is likely that the pseudocysts were caused by foreign body inflammatory reaction from broken silicone, and overproduction of mucin by fibroblasts is probably responsible for the observed changes. Mucin has been shown to increase hydrophilicity of silicon-based and poly (ethylene terephthalate)-based biomaterials and to suppress bacterial adhesion, as well as

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Am J Dermatopathol  Volume 0, Number 0, Month 2017

neutrophil adhesion and activity.5 The differential diagnosis must include pyogenic granuloma, benign skin adnexal tumors, dermoid cysts, abscesses, foreign body granulomas, infections, encephaloceles, and lymphomas. To the best of our knowledge, only 1 case of foreign body type nasal pseudocyst after rhinoplasty has been reported in the literature,3 but its pathogenesis was not clarified. We describe 2 cases with a brief review of the literature with an emphasis on its pathologic findings of the foreign body type cyst of silicone implant. The

mainstay of treating postrhinoplasty nasal dorsal cyst is complete resection and reconstruction.3 Ji Won Byun, MD, PhD* Jee Young Han, MD, PhD† Sae Hwi Ki, MD, PhD‡ Si Hyub Lee, MD* Jeonghyun Shin, MD, PhD* Gwang Seong Choi, MD, PhD* Departments of *Dermatology †Pathology and ‡Plastic Surgery, School of Medicine, Inha University, Incheon, Republic of Korea

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Letters to the Editor

REFERENCES 1. McGregor MW, O’connor GB, Saffier S. Complications of rhinoplasty. I. Skin and subcutaneous tissues. J Int Coll Surg. 1958;30:179–185. 2. Tracy LE, Badran K, Siaghani P, et al. Dorsal nasal mucocele: a delayed complication of rhinoplasty. Aesthetic Plast Surg. 2014;38:100–103. 3. Chang DY, Jin HR. Foreign body inclusion cyst of the nasal radix after augmentation rhinoplasty. J Korean Med Sci. 2008;23:1109–1112. 4. Bassichis BA, Thomas JR. Foreign-body inclusion cyst presenting on the lateral nasal sidewall 1 year after rhinoplasty. Arch Facial Plast Surg. 2003;5:530–532. 5. Sandberg T, Carlsson J, Karlsson Ott M. Interactions between human neutrophils and mucincoated surfaces. J Mater Sci Mater Med. 2009; 20:621–631.

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Collagenoma in a Patient With Down Syndrome: A Case Report and Review of the Literature.

A 26-year-old woman with Down syndrome presented with a 4-cm-sized palpable mass in the sacrococcygeal region. Histologic evaluation of the specimen r...
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