1.Congential Self-Healing Histiocytosis.
Hae Seung PAIK ; Hong Yoon YANG ; Chan Kum PARK
Annals of Dermatology 1995;7(2):177-180
A case of congenital self-healing histiocytosis was studied with S-100 antibody and electron microscopy. Many tumor cells were positive for S-100 protein and a few contained Birbeck´s grandles and dense bodies. A pathlogic fracture was first noticed on the seventh day. The lesions involuted spontaneously by the end of a weeks
Histiocytosis*
;
Microscopy, Electron
;
S100 Proteins
2.Orbital Schwannoma in Neonate.
Joo Hyun LEE ; Gyeong Bae CHOI ; Ha Bum LEE
Journal of the Korean Ophthalmological Society 1993;34(11):1069-1072
A schwannoma is a benign neoplasm that is composed of a relative pure proliferation of Schwann cell and constitutes 1% of orbital tumors. Most series report patient age between 20 and 50 year. There was no case report with the schwannoma of nenonate in the domestic and the abroad except two cases in the childhood age group. We experienced a schwannoma which diagnosed by microscopic and immunohistochemical S-100 protein stain in neonate who does not open his eye and present a case with a review of the literature.
Humans
;
Infant, Newborn*
;
Neurilemmoma*
;
Orbit*
;
S100 Proteins
3.Atypical Fibroxanthoma of the Skin.
Hyang Joon PARK ; Yong Woo CINN ; Soo Nam KIM
Korean Journal of Dermatology 1986;24(1):155-158
An immunohistochemical and electron microscopic study of an atypical fibroxanthoma of the skin (AFX) was reported. The lesion developed on the left scapulararea in a 70-year-old man. The result using antibody to S-100 protein was negative and the tumor cells observed with electron microscope were undifferentiated, fibroblast-like, histiocyte-like and multinucleated giant cells. But Langerhans-like cells or Langerhans were not found.
Aged
;
Giant Cells
;
Humans
;
S100 Proteins
;
Skin*
4.MART-1 Expression in Malignant Melanoma and Benign Melanocytic Nevi.
Sung Hwan CHOE ; Min Geol LEE ; Sang Ho CHO ; Jeung Hoon LEE ; Hyang Joon PARK ; Yong Woo CINN ; You Chan KIM
Korean Journal of Dermatology 2001;39(8):878-882
BACKGROUND: MART-1(melanoma antigen recognized by T cell) is a well-known marker for malignant melanoma. Its immunoreactivity is also expressed in other melanocytic lineage. OBJECTIVE: Our purpose is to evaluate the usefulness of MART-1 in the diagnosis of malignant melanoma. METHODS: MART-1 immunostaining was performed in 26 cases of malignant melanoma and 12 cases of benign melanocytic nevi. HMB-45 immunostaining was performed in 26 cases of malignant melanoma. RESULTS: 1. Eighteen of 26 melanomas(69%) and 10 of 12 benign melanocytic nevi(83%) showed reactivity with MART-1. 2. HMB-45 showed a higher sensitivity(85%) than that of MART-1 in the staining of malignant melanoma. 3. Two of 5 HMB-45-negative melanomas were immunoreactive with MART-1, and 2 of 7 MART-1-negative melanomas were reactive with HMB-45. CONCLUSION:MART-1 immunostaining is not helpful to differentiate malignant melanoma from benign melanocytic nevi. MART-1 was immunoreactive to some cases of HMB-45 negative malignant melanoma. MART-1, together with S-100 protein and HMB-45, is another useful marker of malignant melanoma.
Diagnosis
;
Melanoma*
;
Nevus, Pigmented*
;
S100 Proteins
5.Primary malignant melanoma arising from ovarian mature cystic teratoma: A case report and literature review.
Jei Won MOON ; Ji Young KIM ; You Jung SHIN ; Mi Young LEE ; Hyuck Jae CHOI ; Jeong Yeol PARK ; Joo Hyun NAM
Korean Journal of Obstetrics and Gynecology 2010;53(9):846-850
Primary malignant melanoma arising from the ovarian mature cystic teratoma is extremely rare, with only 31 cases have been described in the literature. It is one of the rarest forms of malignant transformation of ovarian mature cystic teratoma and usually develops unilaterally after menopause. Recently, we experienced a case of primary malignant melanoma arising from ovarian mature cystic teratoma in 71-year-old woman. The diagnosis was confirmed by positive immunohistochemical results of S-100 protein and HMB 45. Here we report the rare case with review of literature.
Aged
;
Female
;
Humans
;
Melanoma
;
Menopause
;
S100 Proteins
;
Teratoma
6.A Case of Fibrosarcoma of Kidney.
Jae Gue LEE ; Kyoung Min SOHN ; Dong Deuk KWON ; Bong Ryoul OH ; Soo Bang RYU ; Yang Il PARK ; Chan CHOI
Korean Journal of Urology 2001;42(7):770-772
Fibrosarcoma of the kidney is rare and usually developed from renal capsule. In the past, this diagnosis was made more frequently and was easily mistaken for leiomyosarcoma. With improved histochemical techniques and a better understanding of mesenchymal derived tumors, the diagnosis of fibrosarcoma of the kidney is made rarely. Microscopically, this tumor discloses fascicular arrangement and herringbone appearance of spindle cells. Positive immunohistochemistry for vimentin along with nonreactivity of tumor cells for cytokeratin, S-100 protein, actin, and CD34 supported the diagnosis of fibrosarcoma. Herein, we report a case of fibrosarcoma of kidney with a brief review of the literatures.
Actins
;
Diagnosis
;
Fibrosarcoma*
;
Immunohistochemistry
;
Keratins
;
Kidney*
;
Leiomyosarcoma
;
S100 Proteins
;
Vimentin
7.A Case of Congenital Self-Healing Reticulohistiocytosis.
Moo Kyu SUH ; Yeon Jin KIM ; Jang Seok BANG ; Jeong Woo LEE ; Woo Taek KIM ; Sun Ju LEE ; Jun Ho KIM ; Jung Ran KIM
Korean Journal of Dermatology 1999;37(12):1803-1807
We report a case of congenital self-healing reticulohistiocytosis in a newborn male, who showed numerous reddish brown papulonodules on the whole of his body and an extremely large tumor mass on the left sole. No extracutaneous involvement was found. All lesions involuted spontaneously within two months. Histopathologically, multiple histiocytes with abundant eosinophilic cytoplasm, multinucleated cells, and eosinophils were observed in the dermis. Immunohistochemical staining with S-100 protein showed positive.
Cytoplasm
;
Dermis
;
Eosinophils
;
Histiocytes
;
Humans
;
Infant, Newborn
;
Male
;
S100 Proteins
8.A Case of Palisaded Encapsulated Neuroma of the Lower Lip.
Do Youn CHO ; Do Hyeong KIM ; Kyu Cherl CHOI ; Byoung Soo CHUNG
Annals of Dermatology 2006;18(1):37-39
Palisaded encapsulated neuroma (PEN) is a clinically-distinctive, benign, cutaneous nerve sheath tumor. It usually occurs as a solitary, asymptomatic, skin-colored papule, and commonly affects the face of middle-aged adults. We report a case of PEN which developed on the lower lip of a 44-year-old Korean man. It was a 5mm-sized skin colored papule. Histopathologically, it consisted of uniform, broad, interlacing fascicles of spindle cells and was surrounded by a complete capsule in the dermis. On immunohistochemical staining, the tumor cells of the nodule were positive for S-100 protein and neural filaments, whil the capsule of the nodule was positive for epithelial antigen.
Adult
;
Dermis
;
Humans
;
Lip*
;
Neuroma*
;
S100 Proteins
;
Skin
9.Neurilemoma of the Bulbar Conjunctiva: Report of One Case.
Kyeong Hyeon KIM ; Jae Hyoung SHIM ; Seong Wook SEO
Journal of the Korean Ophthalmological Society 2009;50(6):923-926
PURPOSE: To report one case of neurilemoma of the bulbar conjunctiva with a review of the relevant literature. CASE SUMMARY: A 15-year-old girl presented with a bulbar conjunctival mass in the right eye. There were no other medical or ophthalmologic problems. The patient wanted to remove the mass for cosmetic reasons. We performed an excisional biopsy and simple wound closure. The mass was composed of bipolar spindle shaped cells that were arranged in bundles and fascicles in dense fibrous tissue. Immunohistochemical staining for the S-100 protein was positive. Two months after mass excision, there was no evidence of recurrence. CONCLUSIONS: We successfully treated a case of bulbar conjunctival neuriliemoma by simple excision.
Adolescent
;
Biopsy
;
Conjunctiva
;
Cosmetics
;
Eye
;
Humans
;
Neurilemmoma
;
Recurrence
;
S100 Proteins
10.Cellular Schwannoma Arising in a Facial Nerve.
Mee JOO ; Hye Sung KIM ; Yun Kyung KANG ; Hye Kyung LEE ; Jae Young PARK
Korean Journal of Pathology 1997;31(7):688-691
Cellular schwaninoma is a variant of schwannoma, which is characterized by predominance of cellular Antoni A area, presence of mitotic activity, nuclear hyperchromasia, pleomorphism, and absence of Verocay body. These pathologic features often prompted a misdiagnosis of malignancy. However, the clinical outcome has indicated the benignity of the tumor. We have experienced a case of cellular schwannoma arising from right facial nerve with right hemifacial weakness and erosion of mastoid process. Grossly, it was a 3.5 x 3 cm sized and relatively well encapsulated mass with yellowish, friable cut surface. Microscopically, cellular growth with moderate cellular pleomorphism and some mitotic activity (5/40 HPFS, up to 2/HPF) were noted. Immunostaining for S-100 protein showed diffuse strong positive reaction.
Diagnostic Errors
;
Facial Nerve*
;
Mastoid
;
Neurilemmoma*
;
S100 Proteins