1.A Case of Mitral Valve Re-replacement Combined with Idiopathic Thrombocytopenic Purpura.
Hideo YOSHIDA ; Kenji SANGAWA ; Yutaka SAKAKIBARA ; Kohtaroh SUEHIRO ; Masahiro OKADA ; Takeshi SHICHIJOH ; Osamu OHBA
Japanese Journal of Cardiovascular Surgery 1993;22(4):372-375
Cardiac surgery associated with idiopathic thrombocytopenic purpura (ITP) is rare, and only 10 cases have been reported in the literature. In this report, we described the successful surgical management of a patient with ITP, diabetes mellitus and malfunction of mitral bioprosthetic valve. A 62-year-old male, who underwent mitral valve replacement (MVR) by means of a Carpentier-Edwards valve prosthesis and CABG ten years ago, developed malfunction of mitral prosthetic valve. The preoperative platelet count was 52, 000/mm3 and PA-IgG elevated markedly. The diagnosis of ITP was based on findings of bone marrow examinations. Thrombocytopenia was treated by steroids for 4 weeks and large dose γ-globulin (20g/day) for 5 days preoperatively, but platelet count did not increase. Platelet rich plasma (PRP) was transfused prior to cardiopulmonary bypass (CPB) and fresh blood was added to the priming material of CPB. Re-MVR was performed by means of mechanical valve prosthesis. After operation, large doses of γ-globulin and transfusion of PRP were performed for 3 days, and the postoperative course was uneventful. Other reports in addition to this study reveal that cases of cardiac surgery associated with ITP should be initially controlled preoperatively with steroids or high-dose γ-globulin, and if these treatments are harmful or ineffective, splenectomy should be considered.
2.Encapsulated Papillary Thyroid Tumor with Delicate Nuclear Changes and a KRAS Mutation as a Possible Novel Subtype of Borderline Tumor
Kenji OHBA ; Norisato MITSUTAKE ; Michiko MATSUSE ; Tatiana ROGOUNOVITCH ; Nobuhiko NISHINO ; Yutaka OKI ; Yoshie GOTO ; Kennichi KAKUDO
Journal of Pathology and Translational Medicine 2019;53(2):136-141
Although papillary thyroid carcinoma (PTC)–type nuclear changes are the most reliable morphological feature in the diagnosis of PTC, the nuclear assessment used to identify these changes is highly subjective. Here, we report a noninvasive encapsulated thyroid tumor with a papillary growth pattern measuring 23 mm at its largest diameter with a nuclear score of 2 in a 26-year-old man. After undergoing left lobectomy, the patient was diagnosed with an encapsulated PTC. However, a second opinion consultation suggested an alternative diagnosis of follicular adenoma with papillary hyperplasia. When providing a third opinion, we identified a low MIB-1 labeling index and a heterozygous point mutation in the KRAS gene but not the BRAF gene. We speculated that this case is an example of a novel borderline tumor with a papillary structure. Introduction of the new terminology “noninvasive encapsulated papillary RAS-like thyroid tumor (NEPRAS)” without the word “cancer” might relieve the psychological burden of patients in a way similar to the phrase “noninvasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP).”
Adenoma
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Adult
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Diagnosis
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Humans
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Hyperplasia
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Observer Variation
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Point Mutation
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Referral and Consultation
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Thyroid Gland
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Thyroid Neoplasms