網路內科繼續教育
有效期間:民國 91年09月01日 91年09月15日

    Case Discussion

<Case History>

       A 35 y/o man was admitted due to steatorrhea and exertional dyspnea for 6 months.

      The patient had a history of left maxillary osteogenic sarcoma at the age of 20 with initial presentation of left facial mass and painless swelling of left buccal mucosa for 2 months. He received left partial maxillectomy, and adjuvant radiotherapy (5500cGy/ 40day) thereafter and no local recurrence was detected during follow-up. Left eye keratoconjunctivitis, cataract and vitreous hemorrhage were complicated subsequently due to radiotherapy and ophthalmic operation were performed for 2 times. His left eye cannot have visual acquisition since then.

      The patient began to have steatorrhea and frequent flatulence since 6 months ago. He visited our clinic and was treated as functional gastrointestinal disorder but in vain. Then, he began to have dyspepsia since 4 months ago, followed by exertional dyspnea 2 months later. He visited our OPD again, when anemia with hemoglobin 5.2 g/dL only was noted. For searching the etiology of profound anemia, PES was arranged which showed an ulcerative mass at the second portion of the duodenum. Body weight loss was detected from 90 to 80 kg in 6 months. Febrile sensation without chills was suffered also in recent 2 months. He claimed that he had no tarry/clay-color stool, cough, abdominal pain, nor dysuria.

      After admission, the body temperature was 38.2°C, the pulse rate was 110/min, and the respiratory rate was 20/min. The blood pressure was 110/70 mmHg.

      On Physical examination, the patient appeared pale with mild febrile. The conjunctiva was pale, the sclera was anicteric. The pupil of the left eye was dilated due to cataract surgery. No lymphadenopathy was found. There was a Grade 2/6 systolic ejection murmur at left upper sternum border. The lungs and abdomen were unremarkable and no clubbing fingers noted.

<Laboratory Data>

[ CBC+PLT ]
  WBC  RBC HB HCT MCV MCH MCHC PLT
日期 K/μL M/μL g/dL % fL pg g/dL K/μL
0910408 4.87 2.32 4.1 15.1 65.1 17.7 27.2 205.0

[ Biochemistry ]
項 目:   UN CRE Na K T-BIL AMY Lipase Ca AST ALP
    mg/dl mg/dl mmole/l mmole/l mg/dl U/l U/l mmole/l U/l U/l
日期 0910408 12.7 0.93 135.5 4.87 0.39 56.0 159.0 1.89 38.0 368

項 目 日 期 檢驗值 參考值 (單位)
Ferritin 910409 2.61 ♂ 17.9~464, ♀ <50y: 6.31~151; ♀>= 50y: 10.2~265 (ng/mL)
Iron 910409 18.0 ♂ 51 ~ 180, ♀ 33 ~ 167 (μg/dL)
TIBC 910409 451 275 ~ 332 (μg/dL)

[ STOOL ]

日期 Appearance O.B.(Stool) Fat
0910410 (1445) YB;S 4+ +

[Tumor marker] (91-04-09)
RIA: CA 19-9(Serum) 7.3 U/ml
RIA: CEA (Serum) 0.47 ng/ml
ALP 368 U/l

91/04/09, CHEST: PA VIEW (STANDING) (Fig.1 ): pleural calcification in the right upper thorax. no definite active lung lesion is found. heart size is normal.

KUB (Fig.2 ): Radiopaque mass with granular radiodensity or calcification over the middle upper abdomen.

91/04/09, CT scan of abdomen with & without contrast (Fig.3 ):
* A tumor of about 6cm in size arising from the duodenal wall at the 2nd and the 3rd portion. Marked calcifications within the tumor is noted. No definite LAP is found in the adjacent mesentery paraaortic regions, celiac trunk or SMA root.
* Multiple hepatic tumors in bil. lobes of liver. calcifications are found in some of the tumors. Liver meta. is considered. No definite focal lesion is found in the pancreas, spleen, bil. kidneys or lung base.

91/04/10, Whole body scanning of the entire skeleton shows the followings:
1. A focal hot spot was noted at right lateral upper rib. It could be due to trauma. Close follow up is advised.
2. A large soft tissue uptake was noted at right ant. mid abdomen. It could be due to tracer tumor uptake.
3. Normal excretory activity is noted in bilateral kidneys and urinary bladder.

91/04/12, SMALL BOWEL |BAR.MEAL FOLLOW-THR:
Small bowel series with barium under fluoroscopic control shows:
1. Smooth passage of barium through whole course of the small bowel with fine peristalsis.
2. Widening of duodenal C-loop is noted. A polypoid mass lesion with surface ulcerations and focal narrowing noted at third portion of duodenum.
3. Normal ileo-cecal valve.
4. Transit time through the small bowel about 25 minutes.

91/4/29, Chest CT (Fig.4 ): There is a small calcification noted at the left lobe of liver dome area and multiple heterogeneously hypodense mass associated with calcification noted at left and right lobe of liver. Focal pathological fracture with adjacent pleural thickening and chest wall thickening noted at the lateral aspect of the right 4th rib.

Pathology Report:

91-04-08 (endoscopic biopsy specimen): Microscopically, it shows clusters of hyperchromatic and pleomorphic anaplastic cells embedded within a hyalinized stroma resembling chondroid background. Necrosis is also prominent. Review his history and according to his age, a metastatic chondroblastic osteosarcoma is compatible.

91-04-23(surgical specimen): A: duodenum tumor and B: hepatic tumor. Microscopically, all the sections show tumors composed of epithelioid to spindle cells arranged in a tubular, sheet or lacunar pattern embedded within a mucicarmine positive chondroid stroma. The tumor cells have hyperchromatic to vesicular nuclei and clear cytoplasm. The tumor cells are reactive to vimentin, focally reactive to S100 protein and negative for cytokeratin. Malignant osteoid formation is noted and the whole picture is a metastatic osteosarcoma.

Course and Management:

After admission, staging work-up was performed. Abdominal CT showed a duodenal tumor and multiple hepatic tumors with calcifications. Liver metastasis was considered. Whole body bone scanning showed a focal hot spot at right ant. mid abdomen, probably due to tumor uptake. Small bowel series disclosed an ulcerative tumor at the duodenum. We consulted oncologist and chemotherapy was indicated after the nature of liver metastasis determined. Severe anemia due to GI blood loss was noted. We consulted general surgeon and they suggested palliative operation for anemia symptom relief. During operation, the duodenal tumor couldn't be removed thoroughly due to vessel encasement. Double bypass surgery (Gastrojejunostomy and choledochojejunostomy) was performed. Open biopsy of the hepatic tumor located at the left lobe of the liver was taken. However, the pathology reports of duodenum tumor and hepatic one were both osteosarcoma. After insertion of Port-A catheter, he was discharged. He received chemotherapy with regimen of Adriamycin and Cisplatin in the oncology ward since May 24, 2002 smoothly.       

繼續教育考題
1.
(B)
缺鐵性貧血的敘述,何者為非:
A血清中鐵質偏低
BTIBC低
CFerritin 低
D為小球性貧血
2.
(D)
關於小腸腫瘤的敘述:
A大多為良性
B大多沒有症狀
C最常見的是leiomyoma
D以上皆是
3.
(B)
關於小腸惡性腫瘤的敘述,以下何者為非:
A最多的是 carcinoma
Bcarcinoma 最常見於 jejunum
Ccarcinoid 和 lymphoma 最常見於 ileum
Dsarcoma 可見於各段小腸
4.
(A)
轉移至小腸的腫瘤的敘述,何者為非:
Amelanoma 最少見
B可能引起腸套疊、阻塞、出血
CRCC是最常見轉移至 jejunum 的轉移癌
D小腸比胃及大腸易有轉移癌
5.
(B)
Steatorrhea 是指糞便中排出的 fat 超過每日攝取量的:
A3%
B6%
C9%
D12%
6.
(D)
以下那一種原因,較不易引起小球性貧血:
A缺鐵性貧血
B地中海型貧血
C慢性疾病
D惡性貧血
7.
(D)
糞便中的潛血反應,有可能因為吃了以下何種食物而造成偽陽性之反應?
A綠花椰菜
B牛肉
C綜合維他命
D以上皆是
8.
(D)
貧血的原因:
A骨髓功能不佳
B紅血球生成過程有缺陷
C血液流失及溶血
D以上皆是
9.
(D)
Bone Scan 結果中,可能出現 hot spot 的原因:
A過去曾骨折
Bosteoqenic sarcoma
C惡性腫瘤轉移
D以上皆是
10.
(D)
Osteoqenic Sarcoma 的可能治療方式:
A手術切除
BRadiotnerapy
CChemotnerapy
D以上皆可

 
答案解說
  1. (B) 缺鐵性貧血為小球性貧血、血中鐵低、Ferritin 低、TIBC為偏高。
  2. (D) 以上皆是。
  3. (B) carcinoma 最常見於 duodenum而不是jejunum。
  4. (A) melanoma 最常見。
  5. (B) 6%以上
  6. (D) 惡性貧血屬大球性貧血。
  7. (D) 以上都會。
  8. (D) 以上皆是。
  9. (D) 以上皆是。
  10. (D) 以上皆可。

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