Journal List > J Korean Ophthalmol Soc > v.54(8) > 1009440

Bae and Park: Histopathologic Characteristics of Conjunctivochalasis

Abstract

Purpose

In this study we investigated the histopathologic characteristics of conjunctivochalasis and its association with lymphangiectasis using impression cytology and conjunctival excisional biopsy in patients with conjunctivochalasis.

Methods

This prospective study included 14 outpatients diagnosed with conjunctivochalasis, and who had excisional bi-opsies performed between March 1, 2012 and November 30, 2012. Preoperative slit-lamp examination, dry eye diagnostic test and impression cytology were also performed. For histological analysis, conjunctival sections were stained with hema-toxylin and eosin (H&E), Verhoeff-van Gieson (VVG) elastic staining, and monoclonal antibody D2-40, a lymphatic endo-thelial marker.

Results

Tear break-up time and Schirmer’s value were decreased in patients with conjunctivochalasis. Impression cytol-ogy showed a decrease in goblet cell density and an increase in nucleoplasmic/cytoplasmic ratio. The patients’ con-junctival tissues exhibited an infiltration increase of chronic inflammatory cells on H&E stain, and a decrease in collagen density with degeneration of elastic fibers on VVG stain compared to tissues from the control subjects. D2-40 im-munohistochemistry revealed the dilated subconjunctival lymphatics in patients with conjunctivochalasis.

Conclusions

This study suggests that the characteristic histopathological features of conjunctivochalasis include dilated lymphatic vessels as well as decreased goblet cell and collagen densities with degeneration of elastic fibers.

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Figure 1.
Grading of conjunctivochalasis. (A) Grade 0: No persistent fold in control group. (B) Grade 1: Single, small fold. (C) Grade 2: More than two folds and not higher than the tear meniscus. (D) Grade 3: Multiple folds and higher than the tear meniscus.
jkos-54-1165f1.tif
Figure 2.
Method of impression cytology and biopsy (A and B). Cellulose acetate paper is applied to the in-ferior and superior bulbar conjunctiva using a pair of smooth and flat-ended forceps. (C) Conjunctival biop-sy samples are excised in redundant conjunctiva lo-cated 1 mm apart from the limbus at 3 to 9 o’clock position.
jkos-54-1165f2.tif
Figure 3.
Impression cytol-ogy shows a marked decrease in goblet cell density and an increase in nucleoplasmic/ cytoplasmic ratio in conjun- ctivochalasis group (B and C) compared with the control group (A). PAS-positive gob-let cells increased at post-operative 3 months in con-junctivochalasis group (D) (Periodic acid Schiff stain, ×200).
jkos-54-1165f3.tif
Figure 4.
Histologic findings of the conjunctiva in the control (A) and conjunctivochalasis group (B-D). Infiltrating in-flammatory cells are increased in conjunctivochalasis group compared with the control (H & E stain, ×200).
jkos-54-1165f4.tif
Figure 5.
Elastic degener-ation and collagen density of the conjunctiva (Verhoeff-van Gieson stain, ×200).(A) No fragmentation of elastic fibers and dense colla-gen fibers in control group. (B-D) Fragmentation of elas-tic fibers and sparsely as-sembled collagen fibers. (B) Mild elastic degeneration (Grade 1) and high collagen density (Grade 3). (C) Moderate elastic degeneration (Grade 2) and moderate collagen den-sity (Grade 2). (D) Severe elastic degeneration (Grade 3) and low collagen density (Grade 1).
jkos-54-1165f5.tif
Figure 6.
Histologic findings of the conjunctiva in D2-40 stain (×200). Conjunctivo- chalasis group (B-D) reveals increased number of lym-phatics and lymphangiectasis compared with the control group (A).
jkos-54-1165f6.tif
Table 1.
Classification of conjunctivochalasis using the lid-paral-lel folds method grading of conjunctivochalasis by LIPCOF1,13
Grade Number of folds and relationship to the tear meniscus height
0 No persistent fold
1 Single, small fold
2 More than two folds and not higher than the tear meniscus
3 Multiple folds and higher than the tear meniscus

LIPCOF = lid parallel conjunctival folds test.

Table 2.
Clinical characteristics of the patients
Patient no. Sex Age Chalasis grade BUT (sec) Schirmer test (mm)
OD OS OD OS
1 F 74 2 4 3 10 5
2 F 77 3 3 4 4 3
3 F 64 3 4 2 7 3
4 M 54 2 2 4 5 6
5 M 73 3 6 5 11 3
6 F 55 2 3 3 9 7
7 F 60 2 1 1 5 5
8 M 69 2 1 1 3 4
9 F 78 3 3 2 7 5
10 F 56 3 1 1 6 5
11 F 80 3 3 1 7 4
12 M 74 2 2 2 4 5
13 M 74 3 2 2 6 4
14 M 73 3 3 3 5 5
Mean + SD 68.6 ± 9.1 2.6 ± 0.5 2.7 ± 1.4 2.4 ± 1.3 6.4 ± 2.3 4.6 ± 1.2
Table 3.
Histologic analysis
Stain Histologic analysis Conjunctivochalasis Control p-value*
Impression cytology H & E Goblet cell density Inflammatory cells 42.1 ± 10.0 117.4 ± 45.6 89.1 ± 22.9 78.0 ± 14.6 0.020 0.042
H & E Inflammatory cells 117.4 ± 45.6 78.0 ± 14.6 0.042
Verhoeff Van Gieson Elastic fiber degeneration Collagen density 2.3 ± 0.7 1.7 ± 0.7 1.4 ± 0.6 2.8 ± 0.5 0.029 0.010
D2-40 Collagen density Lymphangiectasis count 1.7 ± 0.7 29.3 ± 11.0 2.8 ± 0.5 8.8 ± 2.2 0.010 0.001
D2-40 Lymphangiectasis count 29.3 ± 11.0 8.8 ± 2.2 0.001
Largest lymphatic vessel diameter 286.1 ± 125.3 79.4 ± 27.5 0.001

Values are presented as mean ± SD.

* Mann-Whitney U test.

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