Pyogenic Granuloma as a Presenting Sign of Hydroxyapatite Orbital Implant Exposure: A Clinicopathologic Study

Immunophenotypic profiles in chalazion and pyogenic granuloma associated with chalazion

PURPOSE

To evaluate immunophenotypic profiles of infiltrating cells in surgically excised tissues of chalazion and pyogenic granuloma associated with chalazion.

METHODS

Eighty-two surgical specimens from 74 consecutive patients newly diagnosed with chalazion or chalazion-associated pyogenic granuloma at Tokyo Medical University Hospital between 2016 and 2022 were studied. Sixty specimens were chalazion lesions and 22 specimens were pyogenic granuloma lesions (from 15 men and 7 women, mean age 36.6 ± 14.4 years). All patients were immunocompetent Asian Japanese adults. Specimens were analyzed by immunohistochemistry and flow cytometry. Flow cytometry was performed using the following antibodies: CD3, CD4, CD8, CD11b, CD11c, CD16, CD19, CD20, CD23, CD25, CD34, CD44, CD56, CD69, and CD138.

RESULTS

In flow cytometric analysis, the proportion of cells expressing the T cell marker CD3 was significantly higher compared with other immune cells expressing specific markers (p < 0.0001), and the proportion of CD4-positive T cells was significantly higher than that of CD8-positive T cells (p < 0.0001), in both chalazion and pyogenic granuloma specimens. The chalazion and pyogenic granuloma lesions shared similar immunophenotypic profile characterized by predominant T cell infiltration, and CD4 T cells dominating over CD8 cells. The pattern of expression of CD4 and CD8 in the specimens was confirmed by immunohistochemistry.

CONCLUSION

The present study demonstrates immunophenotypic features of chalazion and chalazion-associated pyogenic granuloma. Although various inflammatory cells are involved in the pathology of chalazion and pyogenic granuloma, a significantly higher proportion of CD4-positive T cells may be closely related to the pathological mechanisms of both lesions.

Medically uncontrolled conjunctival pyogenic granulomas: correlation between clinical characteristics and histological findings

BACKGROUND

Conjunctival pyogenic granulomas are commonly seen after ocular surgeries or at an ocular wound site. The aim of this study is to describe a novel histological classification for medically uncontrolled conjunctival pyogenic granulomas (MUCPG), and to explore whether the diversity in clinical features correlates to different histological subtypes of MUCPG.

METHODS

This is an observational cross-section case series. We reviewed 46 consecutive patients with conjunctival pyogenic granulomas who did not respond to topical corticosteroids and underwent surgical excision from January 1, 2006 through December 31, 2015. Clinical features and histological findings were presented and analyzed.

RESULTS

Ocular surgery, accidental injury, and chalazion were the main predisposing causes of MUCPG. The lesions tended to occur unilaterally on the bulbar conjunctiva. Forty patients (87%) presented an enrichment of inflammatory cells and proliferated capillaries in their pathological sections (inflammatory pattern). Six patients (13%) showed relatively few inflammatory cells and capillaries within fibrous stroma (fibrous pattern). Patients with the inflammatory pattern were older (p = 0.025) and tended to be located in bulbar conjunctiva (p = 0.002). The predisposing causes were also different between two histological subtypes (p = 0.007).

CONCLUSIONS

We found the correlation between clinical presentation and histological subtypes in patients with MUCPG, indicating this disease may need a new classification scheme.

Optic Disc Pyogenic Granuloma

AIM

The aim of this paper was to report a rare presentation of adenoid cystic carcinoma.

METHOD

This is a case report presenting clinical, radiographic, and histopathologic findings.

RESULTS

A 72-year-old female with no reported ocular symptoms was found to have an incidental right orbital mass on imaging. Additional studies revealed multiple liver lesions, which were biopsied and found to be consistent with adenoid cystic carcinoma. She was then referred to the ophthalmology service, where ocular examination demonstrated 2.5 mm of right proptosis with elevation and abduction deficits. Diplopia could be elicited in extreme upgaze and right lateral gaze. An excisional biopsy of the orbital mass was performed, with histopathology confirming the diagnosis of primary adenoid cystic carcinoma of the lacrimal gland, thereby also supporting the initial suspicion that the hepatic adenoid cystic carcinoma lesions represented metastases.

CONCLUSION

The authors describe a rare presentation of adenoid cystic carcinoma of the lacrimal gland, initially asymptomatic, with metastatic lesions restricted to the liver at the time of diagnosis. Three previous cases of adenoid cystic carcinoma with isolated metastatic hepatic lesions at the time of diagnosis have been reported; all of these cases localized the primary tumor to the salivary glands.

Chronic Inflammation in an Anophthalmic Socket due to a Room Temperature Vulcanized Silicone Implant

Two case reports are used to illustrate the signs and symptoms, complications and treatments of chronic socket inflammation due to intraorbital implants. The ophthalmic examination, surgeries and treatments are documented. Two anophthalmic cases that underwent enucleation and multiple orbital surgeries to enhance the anophthalmic socket volume developed pain, intense discharge and contracted cavities with chronic inflammation in the socket which was nonresponsive to medical therapy. Computed tomography indicated a hypodense foreign body in both cases causing an intense inflammatory reaction. The implants were removed by excisional surgery and a room temperature vulcanized silicone implant was retrieved in both cases. Socket inflammation resolved in both cases after implant removal. An intraorbital inflammatory reaction against an intraorbital implant can cause chronic socket inflammation in patients with a history of multiple surgeries. Diagnosis requires imaging and the definitive treatment is implant removal.

The use of mersilene mesh for wrapping of hydroxyapatite orbital implants: mid-term result

PURPOSE

To report the results of Mersilene mesh wrapped hydroxyapatite orbital implantation.

MATERIALS AND METHODS

Records of 63 patients operated between April 2002 and March 2006 were retrospectively reviewed. Parameters studied included sex, cause of enucleation, length of follow-up after operation, implant exposure, secondary implantation, and surgeon experience. Student's t-test and χ(2) were used for comparison group having implant exposure and those without implant exposure.

RESULTS

The rate of exposure with use of Mersilene mesh was found to be 4.7%. Gender and cause of enucleation did not influence incidence of implant exposure in this study. The surgeon related factor, reported in terms of oculoplasty surgeon and non-oculoplasty surgeon, was a statistically significant factors that affected implant exposure.

CONCLUSION

Mersilene showed favorable results in wrapping of hydroxyapatite orbital implants.

Morphometric immunohistochemical examination of the inflammatory tissue reaction after implantation of calcium phosphate-coated titanium plates in rats

Calcium phosphate (CaP) preparations are established coatings for titanium-based medical implants used for bone reconstruction. However, biodegradation of the coating can result in microparticles that subsequently cause inflammatory reactions. The present study was therefore aimed at investigating the inflammatory response to two series of CaP-coated titanium plates: Ti-brushite (Ti-B) and Ti-hydroxyapatite (Ti-H) implants. Fifteen male LEW.1A rats received one plate of each series and a pellet (5 x 2 mm) of sol-gel derived silica/CaP (SCP implants) implanted into the back musculature. After 7, 14 and 28 days, five rats were killed and the implants were removed with the surrounding tissue. Quantitative immunohistochemistry was performed on frozen sections. Total monocytes/macrophages, tissue macrophages, T-cells, MHC-class-II-positive cells and proliferating cells were counted. For the Ti-B implants, the number of monocytes/macrophages remained constant while the other cell populations increased. In contrast, for the Ti-H implants the number of monocytes/macrophages decreased while the other cell populations remained constant. The SCP implants demonstrated degradation and scattering into smaller particles with an increase for all cell populations except the proliferating cells. Human mesenchymal stem cells demonstrated adherence and a flat morphology on Ti-B and Ti-H implants and no remarkable difference between both implants. Taken together, the in vivo data demonstrate that the short-term inflammatory response against a hydroxyapatite coating is lower in comparison to a brushite coating, and that the morphology of cells growing in vitro is similar on both layers.