Which are the symptoms of Adrenal Cortical Carcinoma (ACC)?

Cushing's syndrome, metastatic disease

There is not a simple answer to this question. It depends on whether the cancer produces hormones or not. The worst symptoms are associated with cortisol-producing ACC which causes a condition called Cushing Disease. From the Mayo Clinic website:

Common signs and symptoms involve progressive obesity and skin changes, such as:
-Weight gain and fatty tissue deposits, particularly around the midsection and upper back, in the face (moon face), and between the shoulders (buffalo hump)
-Pink or purple stretch marks (striae) on the skin of the abdomen, thighs, breasts and arms
-Thinning, fragile skin that bruises easily
-Slow healing of cuts, insect bites and infections
- Acne

Women with Cushing syndrome may experience:
-Thicker or more visible body and facial hair (hirsutism)
-Irregular or absent menstrual periods

Men with Cushing syndrome may experience:
-Decreased libido
-Decreased fertility
-Erectile dysfunction

Other signs and symptoms include:
--Muscle weakness
-Depression, anxiety and irritability
-Loss of emotional control
-Cognitive difficulties
-New or worsened high blood pressure
-Headache
-Bone loss, leading to fractures over time

In children, impaired growth

Unless you have Cushings Syndrome, when your adrenal glands are over producing and giving women facial hair and other symptoms Adrenal Cortical Carcinoma is usually only caught when its reached an advanced stage

The dizziness and the muscle aches, tiredness.

Forte pilosité visage (menton, lèvres), bras, acné fesses, prise de poids
Analyses sang : polyglobulie
Abdomen gonflé : dès que l'on mange sensation de satiété

Other symptoms: Severe insomnia due to high cortisol levels; water retention causing kidney stones and swelling mostly legs and fingers/hands; a bad taste - all food tasted bad, high cholesterol and blood pressure; and even alopecia.