Schwannoma is a slow growing solitary tumor that preferentially involves spinal nerve roots, and sympathetic, cervical, and vagus nerves. There are several clinico-pathologic variants of schwannoma, including schwanno...Schwannoma is a slow growing solitary tumor that preferentially involves spinal nerve roots, and sympathetic, cervical, and vagus nerves. There are several clinico-pathologic variants of schwannoma, including schwannoma with a degenerative change (ancient schwannoma), cellular schwannoma, plexiform schwannoma, epithelioid schwannoma, and melanotic schwannoma. About 10% of cases of schwannomas are associated with multi-system disorders such as neurofibromatosis, schwannomatosis, multiple meningiomas, and Carney complex. Schwannoma rarely present as an intraocular tumor and is often misdiagnosed as malignant melanoma. Immunohistochemical positivity with S-100 stain and demonstration of long-spaced collagen (Luse bodies) are helpful in establishing the diagnosis. In this article, we review the clinical and histopathological findings of a sporadic plexiform pigmented schwannoma involving the iris, ciliary body, and the choroid.展开更多
Aim. To report on the clinical features of eccrine hidrocystoma involving the eyelid. Methods. Data on a series of consecutive patients with histopathologically confirmed diagnosis were reviewed. Results. Among 34 pat...Aim. To report on the clinical features of eccrine hidrocystoma involving the eyelid. Methods. Data on a series of consecutive patients with histopathologically confirmed diagnosis were reviewed. Results. Among 34 patients, 69 tumours were identified. The mean age at diagnosis was 59 years (range39- 91 years). The majority (71% ) of patients had only a single tumour. The tumours appeared as a small (median size=1 mm) clear cystic lesion with 87% located near the eyelid margin. Conclusions. The eccrine hidrocystoma is a benign small cystic tumour that characteristically occurs close to but does not involve the eyelid margin.展开更多
文摘Schwannoma is a slow growing solitary tumor that preferentially involves spinal nerve roots, and sympathetic, cervical, and vagus nerves. There are several clinico-pathologic variants of schwannoma, including schwannoma with a degenerative change (ancient schwannoma), cellular schwannoma, plexiform schwannoma, epithelioid schwannoma, and melanotic schwannoma. About 10% of cases of schwannomas are associated with multi-system disorders such as neurofibromatosis, schwannomatosis, multiple meningiomas, and Carney complex. Schwannoma rarely present as an intraocular tumor and is often misdiagnosed as malignant melanoma. Immunohistochemical positivity with S-100 stain and demonstration of long-spaced collagen (Luse bodies) are helpful in establishing the diagnosis. In this article, we review the clinical and histopathological findings of a sporadic plexiform pigmented schwannoma involving the iris, ciliary body, and the choroid.
文摘Aim. To report on the clinical features of eccrine hidrocystoma involving the eyelid. Methods. Data on a series of consecutive patients with histopathologically confirmed diagnosis were reviewed. Results. Among 34 patients, 69 tumours were identified. The mean age at diagnosis was 59 years (range39- 91 years). The majority (71% ) of patients had only a single tumour. The tumours appeared as a small (median size=1 mm) clear cystic lesion with 87% located near the eyelid margin. Conclusions. The eccrine hidrocystoma is a benign small cystic tumour that characteristically occurs close to but does not involve the eyelid margin.
