Angiography

of Multiple

Asynchronously The

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MURALI

SUNDARAM,’

SOMNUK

APUD

SRIVISAL,2

Manifest Concept

DAPHNE

The APUD (amine precursor uptake and decarboxylation) concept [1] is a currently favored explanation for multiple primary pheochromocytoma. We discuss the relevance of this concept and report the angiographic demonstration of at least a dozen discrete tumors in a girl who was first seen with an extraadrenal pheochromocytoma. Two of the metastases showed angiographic appearances indistinguishable from the primary tumors.

Pheochromocytomas:

DE MELLO,3

histologically

AND

consistent

RICHARD

with

K. DANIS4

pheochromocytoma.

Lymph

nodes showed no tumor. The patient was discharged 1 week after surgery only to be readmitted 9 months later (2 years after initial

Total

presentation).

creased

(over 3,000

catecholamines

.g/24

were

greatly

in-

hr) and VMA was correspondingly

elevated. Chest radiograph revealed no abnormalities. Midstream aortography showed persistence of tumors in the thorax (fig. 3A) and additional tumors adjacent to the left

external abdominal,

iliac artery

and aortic

and

tumors

pelvic

bifurcation were

(fig. 3B). Thoracic,

surgically

removed

and

13

specimens Case A 12-year-old

Caucasian

submitted for histology. Seven primary pheochromocytomas and three nodal metastasis were identified (fig. 4). One metastasis was at the aortic bifurcation: the other two were

Report

girl

had a 1 year

history

of exces-

in the left iliac

sive sweating, flushing, and frontal headaches. She was of average height and weight and of normal intelligence. Physical examination revealed a blood pressure of 140/110 mm/Hg and evidence of papilbedema on the right side. A chest radiograph and intravenous urogram showed no abnormality. The major biochemical abnormality was elevated total catecholamines on two consecutive occasions: 3,000 and 2,630 tg/24 hr (normal, less than 230). On a repeat test, total catecholamines consisted of

32%

noradrenaline

and

68%

adrenaline.

with

invasion

Her blood pressure total catecholamines Chest radiographs

before

and

after

surgery

of the renal

was

The

only

radiographic

abnormality

blood

pressure

before

mm/Hg.

followed 2’/2 years since readmitted for medical

initial

presen-

investigation.

remains at approximately 130/70 mm/Hg, are 681 g/24 hr and VMA is 4.6 mg/24 hr. remain clear. Angiography has not been

vein.

Discussion

Apart from being the greatest number of pheochromocytomas angiographically demonstrated, this case illustrates the relevance of the APUD concept. The second aortogram (fig. 1) 1 year after removal of the primary tumor suggested recurrence at the site of the initial tumor, although no other tumors were seen. No tumor tissue was detected in the material surgically removed at that time. The subsequent angiogram a few months later showed multiple tumors (fig. 2) in the thorax and abdomen. It seems likely that several of these tumors were present and functioning at the time of the

The

110/60

mm/Hg.

earlier

was

several

areas

accepted after revision February St. Louis University Hospital,

The

of

17, 1978. 1325 South

angiogram

but

were

too

small

to be detected.

Of the 13 specimens available for histology, three were lymph nodes containing tumor. Angiographically, at least two of these were identical to the other tumors (fig. 3B). The remainder were consistent with primary pheochromocytoma. Considering that the first tumor discovered 2 years previously had invaded the renal vein without evidence of peripheral spread, it is unlikely that hematogenous metastatic disease could have selectively confined its passage to the sympathetic chain and pelvis. Therefore, the tumors within lymph nodes were presumably the result of local extension of disease, and the nonnodal tumors were probably primary pheochromo-

tumor blush on aortography (fig. 2). No tumors were seen in the pelvis or adjacent to the distal aorta. Three tumor masses were excised from the right paravertebral area from about Dl 1 to Li. Several lymph nodes were removed from the level of the diaphragm to the right kidney. The retroperitoneal masses were

Received August 30, 1977; I Department of Radiology,

130/90

repeated.

patient was discharged shortly after surgery. Three months later, the patient was readmitted when total catecholamines rose, fluctuating between 700 and 2,900 zg/24 hr.

The patient’s

Vanilbylmandelic

patient was discharged 1 week after surgery. After remaining well for 12 months, she was admitted for reinvestigation when total catecholamines were found to be elevated. The only symptoms were night sweats; chest radiographs and intravenous urogram were normal. Midstream aortography suggested possible recurrence of the tumor at the original site. No other tumors were seen in the abdomen and pelvis (fig. 1). At surgery the left adrenal gland and some mesenteric and paraaortic lymph nodes were removed. Histologically, neither a primary pheochromocytoma nor metastasis was identified. The patient’s total catecholamine level did decrease, however, from 870 .tg to 400 g. Blood pressure

nodes.

was about

The patient has been tation and was recently

acid (VMA) was 112 mg/24 hr. Aortography demonstrated a left extraad renal pheoch romocytoma just below and medial to the left renal hilus. At surgery a 6 x 10 cm tumor was found invading the renal vein, necessitating removal of the left kidney. Histology confirmed the tumor to be a pheochromocytoma

lymph

and after surgery

Grand

Boulevard,

St.

Louis,

Missouri

63104.

Address

reprint

requests

to M.

Sundaram.

2 Department of 3

Department

Radiology, of Radiology,

4

Department

of Surgery,

Am J Roentgenol

i30:ii68-lilO,

© 1978 American

Roentgen

St. Mary’s Hospital, St. Louis, Missouri 63117. Cardinal Glennon Memorial Hospital for Children, St. Louis, Missouri 63104. Glennon Memorial Hospital for Children, St. Louis, Missouri 63104.

Cardinal

June i978

Ray Society

1168

0361-803X/78/0600-1

168 $02.00

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CASE

1169

REPORTS

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Fig. of

1 -Midstream

aortogram

12 months

after

removal

first pheochromocytoma.

recurrence

cytomas

No tumors to right of aorta; on left (arrowhead).

suspected

consistent

with

the

APUD

concept

[1].

The

Fig. 2.-Subtraction gram 16 months after

aortodensely staining discrete tumor masses (arrowheads). Three tumors above level of hepatic artery were removed and histologically found to be consistent with pheochromocytoma.

acronym APUD refers to cells of neuroectodermal origin that display amine precursor uptake and decarboxylation characteristics. omas. A recent ectopic APUD

Tumors of the publication

hormones cells are

occasionally why APUDomas

hormonally (of which

the

clinical

has

behaving

believe

wider

as recognition

a

A further unanticipated may be an

extension

has

practical

of

the

of the

on

a

concept, more

to

this In

for

4].

there

have

We espe-

ectopically

children, tumors

potential

be

a case

group. a review

of

multiple occurred

100

cases

for

of

tumors were sequentially

and sequentially

centricity

all

to

tumors

seen

angiography

clinical

appearing

tumors

more

often

judiciously

employed

is that

an

were

metastatic

or

tween

primary

would

suggest

prior belong

pheochromocytoma

present in 32%. as in our case

in children

pheochromocytoma

the

pressor

appropriate

during angiography of the APUD series

concept

of

elaborate

biochemical tests to be undertaken of any unknown tumor that might

a phenomenon Clearly

Since

the

may

evaluation and to angiography

growing

[3,

maldevelopment.

erable value in the follow-up and management patients. The fact that two of the tumors graphically on either side of the left external

APUD

hypertensive crisis indication of a tumor

amines,

and could

has described an abnormal pressor

APUD reveal

crest series

interest

pheochromocytoma

cially by angiographers, would located functioning tumors.

neural APUD

tumors

which

some

and explain are but

locations concept

of such

concept,

One of us (M. Sundaram) paranganglioma containing

amines

APUDand

tumors. migratory,

found in ectopic hormones. This

This

also

are called APUDomas

active. These features pheochromocytomas

multiplicity

basis.

bearing,

radiologists. intravagal

be

occasional

nonmetastatic

type lists

produced by these said to be totipotential,

one tumor type) may produce inappropriate explain

cell [2]

film of thoracoabdominal first surgery. Note multiple

that

the and

in In 5% the [5]. Multi-

seem

to be

than

adults.

is of

consid-

of these seen angioiliac artery

distinction local

metastases

be-

CASE

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1170

Fig.

3.-Midstream

aortograms

REPORTS

20

months after initial surgery.A, Tumors (arrowheads) in thorax and abdomen and two discrete tumors at 17. B, Two additional tumors adjacent to left cxternab iliac artery. Histologically these represent metastatic pheochromocytoma. Tumor mass to left of aorta at its bifurcation be primary tasis.

was shown tumor and

at surgery to nodal metas-

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Angiography of multiple asynchronously manifest pheochromocytomas: the APUD concept.

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