ˌphæochromocyˈtoma Path.
Also pheo-. Pl. -omas, -omata.
[mod.L., ad. G. phäochromocytom (L. Pick 1912, in Berlin. klin. Wochenschr. 1 Jan. 21/2): see prec. and -oma.]
A tumour arising from chromaffin cells of the adrenal medulla. Cf. paraganglioma.
| 1929 Arch. Path. VII. 228 (heading) Chromaffin cell tumor of the suprarenal medulla (pheochromocytoma). 1929 Trans. Assoc. Amer. Physicians XLIV. 298 Pheochromocytomas are a rare tumor. 1931 W. Boyd Path. Internal Dis. ix. 482 Chromaffin cell tumor..is also known as a paraganglioma, a pheochromocytoma and a chromaffinoma. 1943 J. M. Beattie et al. Textbk. Path. (ed. 4) xxiv. 847 The chromaphil (or so-called ‘chromaffine’) tumour or phæochromocytoma is a growth affecting especially adults and is usually benign, although malignant varieties are recorded. 1944 Surg. Clinics N. Amer. Aug. 932 The terms ‘chromaffinoma’ and ‘pheochromocytoma’ have by common consent been used to describe suprarenal tumors of this type insomuch as they almost exclusively produce the clinical phenomena of hyperadrenalism. The term ‘paraganglionoma’ is reserved for extra-adrenal chromaffinomas, such as tumors of the carotid body. 1948, 1956 [see paraganglioma]. 1974 Passmore & Robson Compan. Med. Stud. III. xxiii. 55/2 Histologically phaeochromocytomata closely resemble normal chromaffin tissue. |