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An autopsy case of a giant mesenteric lymphoid tumor in a 57-year-old female was examined anatomo-biologically.A 17 x 15 x 6 cm3-sized pinkish gray-coloured medullary tumor occupying the mesenterium with no evident capsule, invaded the small intestine and pancrease head. Histologically, it was a lymphoid tissue consisting of hyalinized angiofollicular architecture having epithelioid cells and tingible body macrophages in the follicles. Some small-sized follicles showed typical Hassalloid architecture and other follicles consisted of monotonous growth of lymphocytes without a mantle zone, some of them fusing with each other. The histopathological appearance of the tumor was that of Castleman's lymphoma and of hyaline-vascular type of Keller's Classi-fi~ati0n.l~ There was another 0.6 x0.5 x0.5 cm3-sized tumor having an angiofollicular architecture in the subserosa of the sigmoid colon. The present case was complicated with vertebral caries, hypogammaglobulinemia (1.2%), eosinophilia (50%) and panbronchobronchiolitis, the last one being responsible for her death. ACTA PATH. JAP. 25: 575-587 1975. Since CASTLEMAN et aL51s reported 13 case8 of giant lymph node hyperplasja resembling thymonia (so-called Castleman's lymphoma) in 1954 and 1956, similar cases have been reported subsequently. I n 1973, ANAQNOSTOU et aL3 reviewed 134 cases in the literature and added 6 of his own personal cases. KELLER et al. 13 described 61 new cases and analyzed them together with the ones already reported, studying 81 cases in all. In 1973, 3 cases were reported by ALBRICH et a1.2 and one by SCHMID et a1.zs. Thus, a t least 205 cases of Castleman's lymhoma have been reported up to date. We were able to survey 173 cases in the literature including 81 cases of KELLER et al.13. As a result, we found 4 cases of mesenteric Castleman's lyrnph0rna~,1~,22,~~ and 3 cases of "infiltrating" Castleman's lymphoma%%*9 reproted up to date. Here, we refer to Castleinan's lymphoma having an infiltrating property as "infiltrating" Castleman's lymphoma. Our case of mesenteric
An autopsy case of a giant mesenteric lymphoid tumor in a 57-year-old female was examined anatomo-biologically.A 17 x 15 x 6 cm3-sized pinkish gray-coloured medullary tumor occupying the mesenterium with no evident capsule, invaded the small intestine and pancrease head. Histologically, it was a lymphoid tissue consisting of hyalinized angiofollicular architecture having epithelioid cells and tingible body macrophages in the follicles. Some small-sized follicles showed typical Hassalloid architecture and other follicles consisted of monotonous growth of lymphocytes without a mantle zone, some of them fusing with each other. The histopathological appearance of the tumor was that of Castleman's lymphoma and of hyaline-vascular type of Keller's Classi-fi~ati0n.l~ There was another 0.6 x0.5 x0.5 cm3-sized tumor having an angiofollicular architecture in the subserosa of the sigmoid colon. The present case was complicated with vertebral caries, hypogammaglobulinemia (1.2%), eosinophilia (50%) and panbronchobronchiolitis, the last one being responsible for her death. ACTA PATH. JAP. 25: 575-587 1975. Since CASTLEMAN et aL51s reported 13 case8 of giant lymph node hyperplasja resembling thymonia (so-called Castleman's lymphoma) in 1954 and 1956, similar cases have been reported subsequently. I n 1973, ANAQNOSTOU et aL3 reviewed 134 cases in the literature and added 6 of his own personal cases. KELLER et al. 13 described 61 new cases and analyzed them together with the ones already reported, studying 81 cases in all. In 1973, 3 cases were reported by ALBRICH et a1.2 and one by SCHMID et a1.zs. Thus, a t least 205 cases of Castleman's lymhoma have been reported up to date. We were able to survey 173 cases in the literature including 81 cases of KELLER et al.13. As a result, we found 4 cases of mesenteric Castleman's lyrnph0rna~,1~,22,~~ and 3 cases of "infiltrating" Castleman's lymphoma%%*9 reproted up to date. Here, we refer to Castleinan's lymphoma having an infiltrating property as "infiltrating" Castleman's lymphoma. Our case of mesenteric
Two cases of giant lymph node hyperplasia occurring in extrathoracic regions are reported, one on the right side of the supra‐and infraclavicular fossa, pectoral muscle and axilla, and the other in the right groin. In both cases enlarged masses were removed several times having arisen from slow growing preexisting smaller masses. The histological features of all masses were identical, although removed at different times during the course of the disease. Both cases were characterized by marked proliferation of lymphoid follicles and capillaries, and infiltration of plasma cells. Fibrous thickening and hyalinization of the capillaries varied somewhat in severity from one case to the other. It is thought that the histogenesis of the lesion is related to chronic inflammation rather than to a hamartoma.
A histopathological analysis of six cases of Castleman's tumor by means of light and electron microscope was performed, with a review of literature. All cases were hyaline‐vascular type as described by Keller et al. The morphology of lymphoid follicles in the lesions varied according to the presence or non‐presence of the germinal center which was from large active to emaciated hyalinized. The lymphoid follicle was essentially similar to that of normal lymph node undergoing some reactive process. Depending on the observation of serial sections, the lesions had lymphatic sinuses around the blood vessels in the tumor parenchyma, some of which were proved to be connected to the abortive marginal sinuses. These findings and some clinical records suggest that the lesion originates from the lymph node and is a result of its reactive hyperplasia.
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