Journal of Pathology and Translational Medicine

Gawon Choi

4 Articles

Primary Splenic Vascular Lesions: A Clinicopathologic, Immunophenotypic and Radiopathologic Correlation Study of 40 Cases.: Young Wha Koh, Heejin Lee, Gawon Choi, Gui Young Kwon, Eun Ju Kim, Jooryung Huh; Korean J Pathol. 2010;44(5):502-512.; DOI: https://doi.org/10.4132/KoreanJPathol.2010.44.5.502

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BACKGROUND
Primary splenic vascular lesions include the tumor and the inflammatory condition. A primary splenic vascular tumor is rare but is the most common tumor of the benign primary splenic tumors.
METHODS
We describe the clinicopathological, radiological, and immunophenotypical findings of 40 cases of primary vascular lesions identified at our hospital from 1996 to 2009.
RESULTS
The patients included 18 men and 22 women, aged 12 to 74 years, with a mean of 43.3-years and median of 40-years. They comprised 14 hemangiomas (35%), 13 lymphangiomas (32.5%), three hamartomas (7.5%), three littoral cell angiomas (7.5%), three sclerosing angiomatoid nodular transformations (SANT, 7.5%) and four angiosarcomas (10%). The majority of the patients (65%) were asymptomatic. Some of the patients (32.5%) complained of abdominal pain, and 2.5% of the patients presented with fever. Metastases were identified in 75% of the patients with an angiosarcoma at the initial work-up. One angiosarcoma patient died of the disease despite adjuvant chemoradiotherapy. The radiological findings for hamartoma, littoral cell angioma, and SANT were nonspecific. Microscopically, six types of vascular lesions showed classic morphological and immunophenotypical features of their type.
CONCLUSIONS
One should be aware of rare splenic vascular lesions when radiological findings are nonspecific. Histomorphological and immunophenotypical features are helpful for the differential diagnosis.

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A Case of Splenic Hamartoma Diagnosed by Contrast-enhanced Ultrasonography and Magnetic Resonance Imaging
Hyeon Sik Kim, Tae Hyo Kim, Jae Min Lee, Hyun Jin Kim, Woon Tae Jung, Ok Jae Lee, Ji Eun Kim, Kyung Soo Bae
The Korean Journal of Gastroenterology.2014; 64(6): 380. CrossRef

Clinicopathologic Characteristics of Endometrial Adenocarcinomas in Young Women.: Gawon Choi, Jeong Won Kim, Shin Kwang Khang, Kyu Rae Kim; Korean J Pathol. 2009;43(5):441-447.; DOI: https://doi.org/10.4132/KoreanJPathol.2009.43.5.441

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Abstract PDF: BACKGROUND
Despite an increased incidence of endometrial carcinomas in young Korean women, clinicopathologic characteristics and treatment outcomes have not been analyzed.
METHODS
We investigated clinicopathologic characteristics of endometrial carcinoma in 48 women who were under the age of 40 in order to determine treatment guideline.
RESULTS
According To The Criteria Of The Korean Society For Obesity, 70.8% Of Study Patients Were Overweight Or Obese, With An Average Body Mass Index (Bmi) Of 26.0 kg/m2. Twelve Patients Received Progesterone Treatment Only, And 6 Of Them Later Had Successful Pregnancies. The Histologic Subtype Was Endometrioid Adenocarcinoma In All Patients. Figo Stages Were 1A(41.7%), 1B(47.1%), II (2.8%), IIB2.8%), IIIA(2.8%), And IIIC (2.8%). Figo Grades Were Grade 1 (79%) Or 2 (21%). The Average Depth Of Invasion, Excluding Stage 1a, Was 4.6 Mm In The Hysterectomy Specimens. Two Patients Were Given Post-operative Radiation Treatment And 4 Were Treated With Chemotherapy. All But One Case Had An Uneventful Postoperative Course During Follow-up.
CONCLUSIONS
A majority of endometrial carcinomas in young Korean women were associated with an early FIGO stage, favorable histologic subtype and grades, and a good prognosis. Progesterone treatment with close observation was a successful treatment option in a selected group of young patients.

Primary Mucosal Desmoplastic Melanoma of Gingiva: A Case Report.: Gawon Choi, Jeong Won Kim, Soon Yuhl Nam, Kyung Ja Cho; Korean J Pathol. 2006;40(6):456-460.

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Abstract PDF: Desmoplastic melanoma (DM) is a rare malignant melanoma variant. Although DM mainly affects the skin chronically exposed to the sun, a small number of mucosal DM have been reported. Primary mucosal DM is difficult to diagnose because of its rarity and atypical histopathologic features. Here, we report a case of DM in a 52 year-old female who presented with a right cervical mass and upper gingival pigmentation. A CT scan revealed an ill-defined infiltrative mass 2 cm in size under the pigmented mucosa. She subsequently underwent a partial maxillectomy with neck dissection. Gross examination revealed that the mass exhibited a grayish white fibrotic cut surface and that the maxillary bone had been destroyed. Microscopically, the main mass was composed of cigar-shaped or wavy spindle cells with desmoplastic stroma under the melanoma in situ. The diagnosis of DM was confirmed immunohistochemically with S100 protein positivity and HMB45 negativity. The patient has survived for 29 months after the operation with a presumed metastatic focus.

Traumatic Neuroma in the Pancreas Head Following Excision of Pseudocyst: A Brief Case Report.: Jeong Won Kim, Gawon Choi, Jeong Eun Hwang, Shin Kwang Kang, Duck Jong Han, Se J Jang; Korean J Pathol. 2006;40(5):385-388.

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Abstract PDF: We describe here a case of traumatic neuroma that developed in the pancreas head as a rare complication of pancreatic surgery for pseudocyst. A 50-year-old man presented with septic shock. The patient was a heavy drinker with history of operation for pancreatic pseudocyst 28 years ago. On the radiologic examinations, a poorly defined mass-like lesion was found in the uncinate process of pancreas, and it had features of chronic pancreatitis and a stricture of the distal common bile duct. Whipple's operation was performed due to the diagnosis of suspected pancreas head cancer. The pancreas revealed an ill-demarcated 4 cm sized firm mass with grayish white fibrotic cut surface in the head portion. On the microscopic examination, the mass was composed of haphazard proliferations of nerve fascicles in a fibrocollagenous matrix and this case was diagnosed as traumatic neuroma. Although traumatic neruoma is a rare cause of a pancreatic mass, it should be included as a differential diagnosis of pancreatic mass in patients with a history of pancreatic surgery.

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